antarctica

The rift is visible on the left in these images taken by the Multi-angle Imaging SpectroRadiometer (MISR) on NASA’s Terra satellite on Aug. 22, 2016, The ice shelf comprises the left half of the image, and thinner sea ice appears on the right.

See the Giant Crack That Could Collapse Part of an Antarctic Ice Shelf

A large crack in an Antarctic ice shelf has grown by 13 miles in the past s...

A large crack in an Antarctic ice shelf has grown by 13 miles in the past six months

A worker from the U.S. South Pole Amundsen-Scott station arrives at a clinic in Punta Arenas, Chile, on Wednesday, June 22, 2016.

Mission Completed: Two Sick Workers Rescued From Remote South Pole Station

It's only the third time that a rescue has ever been attempted during the A...

It's only the third time that a rescue has ever been attempted during the Antarctic winter

This handout photo dated 31 October 2002 shows an aerial view of the U.S. Amundsen-Scott South Pole Station in Antarctica.

Canadian Plane Lands at the South Pole In Risky Mission to Rescue Sick Worker

The rescue is anything but routine with only two such missions ever achieve...

The rescue is anything but routine with only two such missions ever achieved

The Aurora Australis ship sits among new ice, moored in Horseshoe Harbour at Mawson Station, Antarctica, in this undated file photo supplied by the Australian Antarctic Division

Australia Has Rescued 37 People Stranded on an Icebreaker Ship in Antarctica

The <i>Aurora Australis</i> is a 4,311-ton icebreaker

The Aurora Australis is a 4,311-ton icebreaker

An iceberg appears to dwarf a 3,000 tonne ship in the Antarctic Peninsula in Feb. 2016.

This 'Giant' Iceberg is Actually Shorter Than This Ship

That's a 3,300-ton ship

Emperor penguins on an ice edge in Antarctica.

Antarctica May Have Just Set a Record for Its Hottest Day Ever

The continent appears to have hit 63.5 F for the first time thanks to globa...

The continent appears to have hit 63.5 F for the first time thanks to global warming

SANAA, YEMEN - FEBRUARY 07: A Houthi Leader Mohamad Ali al Houthi is seen during the ceremony that celebrates constitutional declaration issued by the Shiite Houthi movement that dissolves parliament and establishing a 551-member transitional council , in Sanaa, Yemen on February 07, 2015. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)

Five Best Ideas of the Day: March 27

1. Why did Saudi Arabia lead airstrikes on the rebels who’ve seized Yemen? ...

1. Why did Saudi Arabia lead airstrikes on the rebels who’ve seized Yemen? The answer isn’t as clear as it seems. By Frederic Wehrey at the Carnegie Endowment for International Peace 2. Three black swimmers...