Add Yahoo as a preferred source to see more of our stories on Google. [Getty Images] Human activities are causing world temperatures to rise, posing serious threats to people and nature. Things are ...

The constant deluge of bad news about rising global temperatures and their impacts can make it feel like the world is ending. Is it? Reading time 8 minutes If a 60-mile-wide (100-kilometer-wide) ...

The Earth’s atmosphere is nothing but freely roaming molecules. Left alone, they would drift and collide, and eventually even out into a mixture that’s dynamic, yet stable and broadly unchanging. The ...

Human activities are causing world temperatures to rise, posing serious threats to people and nature. Things are likely to worsen in the coming decades, but scientists argue urgent action can still ...