In the distant past, the solar system was rife with impacts and collisions. Millions of rocky objects zoomed chaotically ...

"The range of possible outcomes is a lot wider than anybody has appreciated until now." ...

Under the sea, green algae have evolved a clever way to handle too much sunlight. Scientists found that a special pigment ...

Scientists are taking the once-radical concept of dimming the sun through stratospheric aerosol injection (SAI) seriously, ...

Once considered a fringe idea, the prospect of offsetting global warming by releasing massive quantities of ...

A comet discovered earlier this year, now just bright enough to be visible to the naked eye, is poised to be among the top ...