Recent surface water detected on Mars

Parts of Mars appear to have been modified by liquid water comparatively recently, indicating that there may have been favorable conditions for life.

Thawing permafrost affects climate more than thought

As the Arctic warms, thawing permafrost will release greenhouse gases  faster and in greater amounts than previously believed.

Melting permafrost could ramp up global warming

Thawing permafrost could release billions of tons of carbon into the atmosphere by the end of this century, further accelerating global warming.