Sea-level rise underestimated by half?

A new study suggests that sea-level rise over the next 100 years could be nearly double earlier estimates.

Evolution insights from a walking cavefish

Fish evolved into the first land vertebrates 420 million years ago. Clues to that fins-to-limbs transformation may lie in a walking blind cavefish in Thailand.

Beauty of the northern lights

Gorgeous 5-minute video of the northern lights in February and March 2016 - captured in still images, panoramas, time-lapse and real-time videos.

Watch giant ice bridge collapse

An ice bridge collapsed at Perito Moreno Glacier in Argentina earlier this month. Hundreds of tourists and locals gathered to witness the dramatic event.

Another record low for Arctic sea ice

At 5.6 million square miles, 2016 had the lowest winter sea ice maximum in the 37-year satellite record. It's slightly lower than the previous record, set last year.

Pavlof Volcano in Alaska erupts

Huge ash plume caused airline re-routings. Falling ash, volcanic lightning and lava fountaining from summit. By Tuesday morning, eruption was declining.

Could our sun emit killer superflare?

Solar eruptions from our sun are nothing compared to eruptions from some other stars - so-called 'superflares'. Two scientists say our sun could also be a superflare star.

Extinctions without a fossil trace?

Many species now going extinct might vanish without a fossil trace, suggests a new study.

Searching for shipwrecks from space

A new study uses satellite images to detect ships' watery graves.

February 2016 soars past previous warmth record

February 2016 was the warmest February in 136 years of modern temperature records. Last month deviated more from normal than any month on record.

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