Leading experts at the 2009 Aspen Environment Forum called ocean acidification caused by high levels of CO2 emissions a “planet changer”, and predicted that all coral in the ocean would be in danger of dying off by mid-century if we continued to burn fossil fuel at our current rate.
Ken Caldeira of Carnegie Institution, Martin Hoffert [...]

Rocks can be many things: they were probably our earliest weapons, they’ve been ballast on our journeys of exploration, even modern-art pieces.  But a pair recovered from Antarctica may be the grandest application yet - tombstones for an entire world.  Lunar and Planetary Institute researcher Allain Treiman believes that them to be pieces of a [...]