In Chiapas, Mexico’s southernmost state, paleontologists discovered a small piece of amber with something remarkable inside: a 23-million-year-old preserved lizard.
Scientists at the curiously named National Autonomous University of Mexico’s Physics Institute are analyzing the amber. It’s small, loosely trapezoidal in shape, and only about 1.7 inches by 0.5 inches, but contains the entire body of a very tiny lizard. Thanks to the amazing preservation powers of amber, the lizard’s complete skeleton survived to this day, along with a not insignificant amount of soft tissue and even skin.
It’s a bit early to declare with certainty what kind of lizard this is, but the scientists believe at this point that it’s a new species of anole. The anoles are a very common New World family of lizards–if you’ve been to Florida and seen greenish/brownish lizards running all around, those are most likely anoles. They’re friendly lizards, functioning as a sort of pest control (they eat cockroaches, for example) and are even sold as pets, sometimes. This particular preserved (presumed) anole has yet to be given an official Linnaean name.
The amber was found in Simojovel, a municipality in the northern part of Chiapas that’s known, among other things, for its amber.
Microwaves Might Have Same Negative Affects on Environment as Cars, Suggests Research
Microwaves usage across the EU alone emits as much carbon dioxide as nearly seven million cars according to a new study by The University of Manchester.
Researchers at the University have carried out the first ever comprehensive study of the environmental impacts of microwaves, considering their whole life cycle, from ‘cradle to grave’.
The study found:
- Microwaves emit 7.7 million tonnes of carbon dioxide equivalent per year in the EU. This is equivalent to the annual emissions of 6.8 million cars.
- Microwaves across the EU consume an estimated 9.4 terawatt hours (TWh) of electricity every year. This is equivalent to the annual electricity generated by three large gas power plants.
- Efforts to reduce consumption should focus on improving consumer awareness and behaviour to use appliances more efficiently.
Microwaves account for the largest percentage of sales of all type of ovens in the European Union (EU), with numbers set to reach nearly 135 million by 2020. Despite this, the scale of their impacts on the environment was not known until now.
The study used life cycle assessment (LCA) to estimate the impacts of microwaves, taking into account their manufacture, use and end-of-life waste management. Altogether, the research team investigated 12 different environmental factors, including climate change, depletion of natural resources and ecological toxicity. They found, for example, that the microwaves used across the EU emit 7.7 million tonnes of carbon dioxide equivalent per year. This is equivalent to the annual emission of 6.8 million cars.
The research shows that the main environmental ‘hotspots’ are materials used to manufacture the microwaves, the manufacturing process and end-of-life waste management. For example, the manufacturing process alone contributes more than 20% to depletion of natural resources and to climate change.
However, it is electricity consumption by microwaves that has the biggest impact on the environment, taking into account its whole life cycle, from production of fuels to generation of electricity. In total, microwaves across the EU consume an estimated 9.4 terawatts per hour (TWh) of electricity every year. This is equivalent to the annual electricity generation by three large gas power plants.
The study found that, on average, an individual microwave uses 573 kilowatt hour (kWh) of electricity over its lifetime of eight years. That is equivalent to the electricity consumed by a 7 watt LED light bulb, left on continuously for almost nine years. This is despite the fact that microwaves spend more than 90% of their lifetime being idle, in the stand-by mode.
The study’s authors suggest that efforts to reduce consumption should focus on improving consumer awareness and behaviour to use appliances more efficiently. For example, electricity consumption by microwaves can be reduced by adjusting the time of cooking to the type of food.
Waste is another major problem. Due to their relative low cost and ease of manufacture, consumers are throwing more electrical and electronic (EE) equipment away than ever before, including microwaves.
In 2005, across the EU, 184,000 tonnes of EE waste was generated from discarded microwaves. By 2025 this is estimated to rise to 195,000 tonnes, or 16 million individual units being sent for disposal.
Dr Alejandro Gallego-Schmid, from the School of Chemical Engineering & Analytical Science, explains: ‘Rapid technological developments and falling prices are driving the purchase of electrical and electronic appliances in Europe.
‘Consumers now tend to buy new appliances before the existing ones reach the end of their useful life as electronic goods have become fashionable and ‘status’ items.
‘As a result, discarded electrical equipment, such as microwaves, is one of the fastest growing waste streams worldwide.’
Another major contributing factor to the waste is a reduced lifespan of microwaves. It is now nearly seven years shorter than it was almost 20 years ago. Research shows that a microwave’s life cycle has decreased from around 10 to 15 years in the late 90s to between six to eight years today.
Dr Gallego-Schmid added: ‘Given that microwaves account for the largest percentage of sales of all type of ovens in the EU, it is increasingly important to start addressing their impact on resource use and end-of-life waste.’
The study also shows that existing regulation will not be sufficient to reduce the environmental impacts of microwaves. It recommends that it will be necessary to develop specific regulations for these devices targeting their design. This will help to reduce the amount of resources used to make microwaves and waste generated at the end of their lifetime.
Asteroid That Killed Off The Dinosaurs Also Triggered Huge Volcanoes Under The Oceans
When an asteroid hit Earth some 66 million years ago, it triggered devastation around the world.
There were at least three nearly simultaneous events involved in the global catastrophe that ended what we now call the Mesozoic era.
An asteroid between 10 and 15 kilometres in diameter slammed into Earth, creating the Chicxulub Crater near Mexico’s Yucatan Peninsula.
The Deccan Traps, a massive volcanic province in what’s now India, erupted, spewing lava and smoke that filled the skies.
And 75 percent of Earth’s plant and animal life went extinct, which scientists have linked to those other disasters that filled the skies with soot and smoke and transformed the world’s climate.
But when it comes to world-shaking devastation, that wasn’t all that was going on at the time, scientists report in a study recently published in the journal Science Advances.
The asteroid also appears to have sent ripples through Earth’s tectonic plates, which spread out through the oceans and caused tens of thousands of miles of underwater volcanic ridges to spew magma.
The authors describe those eruptions as “on par with the largest eruptive events in Earth’s 4.5-billion-year history, including the Deccan Traps”.
Looking for past volcanic activity
Part of the debate about what really killed the dinosaurs has to do with the interplay between the asteroid impact and the Deccan Traps eruptions. The most up-to-date understanding suggests the Deccan Traps eruptions began before the Chicxulub impact.
But they also seem to have gotten much more active in the time after the asteroid hit.
Yet if the asteroid was able to influence volcanic activity on the other side of the globe, it should have affected volcanoes elsewhere, too. That’s why the authors of this study decided to trace what was happening in the oceans.
To uncover evidence of underwater volcanic activity, the researchers used existing data to examine how the seafloor’s structure changed over the past 100 million years.
They were able to find evidence of massive transformations in the amount of rock on the seafloor, a change caused by volcanic activity.
Eruptions left 650-foot-high piles of rock in the Indian and Pacific oceans, the study authors write in The Conversation. They dated those eruptions to within a million years of the impact, close enough to link the events.
A better picture of the dinosaur apocalypse
These new findings give us a better timeline of what happened to trigger the Cretaceous-Paleogene extinction event.
Although the Deccan Traps were probably erupting for 250,000 years before the Chicxulub asteroid slammed into the planet, the impact transformed the world.
The atmosphere filled with soot, causing global cooling that was strong and sudden enough to have played a strong role in the end of the dinosaurs.
At the same time, the asteroid shook the world and led to earthquakes that released even more magma.
The already flowing Deccan Traps erupted in a whole new way, essentially covering the Indian subcontinent with lava and further filling the skies with particles that reflected the sun’s heat back into space and cooled the planet.
An eruption that was equally strong occurred underwater.
Small mammals and flying dinosaurs – which we now know as birds – survived, but the majority of plant and animal life did not.
We still don’t know exactly which components of these global catastrophes were most responsible for the extinctions, or whether other volcanic systems elsewhere in the world were triggered, too.
“What is clear is that this new research points to global-scale connections between catastrophes, a good reminder that events happening on the other side of the planet can have effects felt everywhere,” the study authors write.
What is very clear is that this was an unpleasant time to be anywhere on Earth.
This article was originally published by Business Insider.
Want a World Without Blackouts? Power the Future With Renewable Energy.
Renewable and Sustainable
Whether at the national or corporate level, an integral part of most plans to combat climate change is making the shift to renewable energy sources. With solar and wind power leading the charge, renewables are steadily finding their way into the energy infrastructure of a number of countries and companies. Some have already become 100 percent renewable, while others continue to carefully wean themselves from fossil fuel.
There is, however, a sizable hurdle that early renewable energy adapters will inevitably encounter. Energy output from solar and wind, and to a lesser extent hydrogen, are dependent on circumstances beyond human control. An emerging solution to this issue is the use of energy storage devices or commercial-grade batteries like Tesla’s Powerpack.
A new study from Stanford University and the University of California, Berkeley (UCB) argues that this hurdle could very well be overcome by a combination of solutions. By making renewable energy completely reliable, it could provide consistent power across all sectors, potentially making blackouts a thing of the past. A manuscript of the study has been published in the journal Renewable Energy.
Lead author Mark Jacobson, a civil and environmental engineering professor at Stanford, also lead a recent study that presented a roadmap to 100 percent renewable energy dependence for 139 nations. In the new study, the researchers completed the roadmap, suggesting three scenarios that would maximize renewable energy output and sustain power to supply the grid.
Using a combination of computer modeling programs that can predict global weather patterns from 2050 to 2054, Jacobson and his colleagues constructed scenarios where 139 nations, grouped into 20 world regions, had converted all sectors into renewable energy by 2050. The team also factored in the effect on energy output from solar and wind power sources. Using another model, the team then calculated the energy produced by more stable renewable sources, such as geothermal and hydrogen.
“One of the biggest challenges facing energy systems based entirely on clean, zero-emission wind, water and solar power is to match supply and demand with near-perfect reliability at reasonable cost,” co-author Mark Delucchi, a UCB research scientist, said in a statement. “Our work shows that this can be accomplished, in almost all countries of the world, with established technologies.”
The results described three scenarios in which nations struck a proper balance between energy output from renewables and predicted energy demand for 2050. Of note, in all three scenarios, blackouts at low energy costs were avoided for a five-year period. The researchers noted that having various energy storage options available was an important factor in that outcome.
For the 20 regions in CASE A, concentrated solar power (CSP) storage, batteries and thermal energy storage proved to be crucial — however, the study noted that “no hydropower turbines beyond current capacity or heat pumps were added.”
Similarly, the 20 regions in CASE B, also found that thermal energy storage and CSP-with-storage were key; the only difference was the addition of hydropower turbines. Though, the study noted that these didn’t increase annual hydrogen power output.
In the third scenario — CASE C — things played out a little differently. CSP and commercial grade batteries were the dominant energy storage options for the regions in the scenario (14 instead of 20), but no hydropower turbines were included. However, the study noted that “heat pumps with no storage replaced all cold and low-temperature heat thermal energy storage.”
Jacobson summarized the results of the study, saying:
Our main result is that there are multiple solutions to the problem. This is important because the greatest barrier to the large-scale implementation of clean renewable energy is people’s perception that it’s too hard to keep the lights on with random wind and solar output.
Jacobson also noted that an important consideration for all three scenarios, in terms of creating a roadmap that works, is political cooperation between the 139 nations. That probably doesn’t come as a surprise, though — considering how clean energy programs and climate deals often depend quite heavily on the politics of the nations involved.
“Ideally, you’d have cooperation in deciding where you’re going to put the wind farms, where you’re going to put the solar panels, where you’re going to put the battery storage,” Jacobson explained. “The whole system is most efficient when it is planned ahead of time as opposed to done one piece at a time.”
Having a road-tested roadmap, so to speak, should at the very least help guide these nations — and the researchers hope they’ll be confident to take action sooner rather than later. If warnings about the rate of global warming are to be heeded, we need a stable renewable energy infrastructure in place well before 2050.
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