Lifeform of the week: Florida manatee

Manatees and elephants have a common ancestor, and both have uncommonly shaped spherical hearts. Check out this sweet video from Three Sisters Springs, Crystal River, Florida.

Soon-to-be-famous comet passes a ringed galaxy

Beautiful image of Comet C/2013 A1 Siding Spring from this weekend. This is the comet that will pass extremely near Mars in October. Thank you, Damian Peach!

Deadly quake strikes south China

A strong 6.1-magnitude earthquake struck China's Yunnan province on August 3, 2014. Reports early August 4 are of 12,000 homes collapsed, at least 398 dead and 1,800 injuries.

Watch online as the moon sweeps in front of Saturn

Online coverage of the moon photobombing Saturn - seen from Australia - will begin on Monday, August 4, starting at 4 a.m. PDT / 7 a.m. EDT / 11:00 UTC.

Summer storm over Alberta, Canada

On the day Shannon McDowell sent in this photo, Alberta was under a severe thunderstorm threat.

Scientist warns of inevitable solar super-storm propelled towards Earth

Such a storm would wreak havoc with our communication systems and power supplies, and scientists say we're overdue.

Methane release likely caused mystery crater on Yamal peninsula

A science team measured methane concentrations up to 50,000 times standard levels inside the crater.

Asteroid impacts may have buried Earth’s earliest rocks

More than 4 billion years ago, giant asteroid impacts melted, mixed and buried the surface of Earth

More heat waves and cold snaps ahead

Climate extremes are here to stay, say researchers.

Deep-sea octopus guards her eggs for nearly 4.5 years

This Octomom was observed to set a new record - 53 months - for the longest brooding period of any known animal.