Current carbon capture schemes are not really ready for prime time, plagued by toxicity, corrosiveness and inefficiency, but a team of chemists have invented low-toxicity, highly effective carbon-trapping "sponges" that could lead to increased use of the technology.

Used in natural gas and coal-burning plants, the most common carbon capture method today is called amine scrubbing, in which post-combustion, carbon dioxide-containing flue gas passes through liquid vats of amino compounds, or amines, which absorb most of the carbon dioxide. The carbon-rich gas is then pumped away - sequestered - or reused. The amine solution is extremely corrosive and requires capital-intensive containment.

The Paleolithic diet, eating like our ancient ancestors, is a diet fad that seeks to emulate the diet of early humans during the Stone Age. But what does that mean? Almost anything people want because ancestral diets differed substantially over time and geography, notes a paper in The Quarterly Review of Biology.

The review examines anatomical, paleoenvironmental and chemical evidence, as well as the feeding behavior of living animals. While early hominids were not great hunters, and their dentition was not great for exploiting many specific categories of plant food, they were most likely dietary "jacks-of-all-trades."

Leading conservationists from around the world have called for environmental lobbyists to stop blocking nuclear energy in defiance of the science consensus. It's clean, it's green, and it's needed to mitigate climate change and protect biodiversity.

In an open letter to environmentalists, over 60 scientists ask the environmental community to "weigh up the pros and cons of different energy sources using objective evidence and pragmatic trade-offs, rather than simply relying on idealistic perceptions of what is 'green'".

Organized by ecologists Professor Barry Brook and Professor Corey Bradshaw from the University of Adelaide's Environment Institute, the letter supports their recent article (DOI: 10.1111/cobi.12433) in Conservation Biology.

The rate at which carbon emissions might be warm Earth's climate today are a lot like the past. 56 million years in the past.

The authors of a new paper believe the Paleocene-Eocene thermal maximum, or PETM, can provide clues to the future of modern climate change. The good news: Earth and most species survived warming that was a lot more pronounced  -  up to 15 degrees Fahrenheit - than even the most dour predictions being made now. The bad news: It took 200,000 years to get back to what we now consider normal.

You're probably not racist. As the world has gotten smaller, race as a bias has become less of a thing. Yet there is a test - the Implicit Association Test - that is guaranteed to show you are racist and weak observational studies that use it end up in a lot of mainstream media stories.

Now there may be a way to cure it.

When the Bárðarbunga volcano beneath Iceland's Vatnajökull ice cap reawakened in August 2014, scientists got an opportunity to monitor how the magma flowed through cracks in the rock away from the volcano.

 Although it has a long history of eruptions, Bárðarbunga has been increasingly restless since 2005, including a dynamic period in August and September of this year, when more than 22,000 earthquakes were recorded in or around the volcano in just four weeks, due to stress being released as magma forced its way through the rock.