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In Earth’s largest extinction, land animal die-offs began long before marine extinction

Because of poor dates for land fossils laid down before and after the mass extinction at the end of the Permian, paleontologists assumed that the terrestrial extinctions from Gondwana occurred at the same time as the better-documented marine extinctions. But a new study provides more precise dates for South African fossils and points to a long, perhaps 400,000-year period of extinction on land before the rapid marine extinction 252 million years ago.

How to explore national parks with virtual tours

“The mountains are calling and I must go,” conservationist John Muir famously wrote in 1873. Many people can relate to feeling beckoned by nature, although for various reasons we can’t always heed the call as quickly as we’d like. Fortunately,…

Coral tells own tale about El Niño’s past

(Rice University) Rice University and Georgia Tech scientists use data from ancient coral to build a record of temperatures in the tropical Pacific Ocean over the last millennium. The data question previous links between volcanic eruptions and El Niño events.

This unusual hole on Mars could be a gateway to hidden wonders

As one of our nearest neighbors, Mars gets a lot of attention. It’s the only planet we’ve visited with rovers, combing over its surface, snapping pictures and taking detailed measurements. Yet we still know little about what lurks beneath that…

Geologic Heat Linked To East Coast Ocean Warming Trend

A well-defined ocean warming trend originating off the United States East Coast is likely from super-heated and methane-enriched fluids emitted from numerous seafloor hydrothermal vents/hot springs (see figure 1 after the jump). Supporting evidence: This trend has shown up on…

Climate change: 10 common myths – and what science really says – CBS News

If you’ve ever engaged in a discussion about climate change, in person or online, you’ve probably encountered some arguments about what the science says. Some of those claims may sound logical but are actually misleading or inaccurate.  In fact, misconceptions…

A brief view of the science behind global warming – The Laconia Daily Sun

To The Daily Sun, Question: What’s the actual science behind global warming? Answer: The earth gets heat from the sun and normally sends an equal amount back into space as infrared radiation. Certain gases — ‘greenhouse gases’ — intercept part…

How earthquakes deform gravity

(GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre) Researchers at the German Research Centre for Geosciences GFZ in Potsdam have developed an algorithm that for the first time can describe a gravitational signal caused by earthquakes with high accuracy. Tests with data from the 2011 earthquake near Fukushima show that the procedure could help to improve earthquake early warning systems in the future.

The government’s sudden passion for climate technology is newfound and insincere | Simon Holmes a Court

If you’re committed to the Paris agreement – to keep the increase in global average temperature to well below two degrees above pre-industrial levels, and pursue efforts to limit the increase to 1.5 degrees – then at a minimum, logically,…