Ari Daniel

Dark rock above the Helheim glacier in southeastern Greenland marks its former level, before a sudden and dramatic retreat of hit many Greenland glaciers a decade ago. Scientists working on the Helheim and the fjord it drains into are looking for clues to

In Greenland, a climate change mystery with clues written in water and stone

About a decade ago, several of Greenland's biggest glaciers suddenly began melting. A decade later, two groups of scientists are trying to unlock the secrets behind a scientific mystery story with potentially big consequences for the future of the island's rapidly-melting ice sheet.

In Greenland, a climate change mystery with clues written in water and stone
Icebergs in Sermilik Fjord, SE Greenland, viewed from a helicopter.

Here's what climate change looks like from the edge of the Greenland icecap

Here's what climate change looks like from the edge of the Greenland icecap
Healthy corals use chemical signals, or smells, to attract fish. New research has found that corals also send out "distress" signals when they're in trouble.

Coral reefs can communicate with fish, and many of them are crying for help

Coral reefs can communicate with fish, and many of them are crying for help
water

Climate change brings a new wrinkle to life on Palau's islands: Fear of the sea

Climate change brings a new wrinkle to life on Palau's islands: Fear of the sea
The World

In Palau, scientists hope they've found a coral reef to save all coral reefs

In Palau, scientists hope they've found a coral reef to save all coral reefs
palau

In Palau, a glancing blow from Typhoon Haiyan prompts a glance toward climate change

Before slamming into the Philippines, Typhoon Haiyan blew across the northern part of the Pacific island nation of Palau, wreaking havoc and elevating concerns about climate change.

In Palau, a glancing blow from Typhoon Haiyan prompts a glance toward climate change

Small Matters

A telescope trained on the farthest galaxies to study holes in the clouds of interstellar gas may help reveal the source of life in the universe.

Small Matters
Local residents help replant mangrove trees on a degraded beach on the Indonesian island of Sulawesi. Tropical mangroves are vital for both fish habitat and protection from storms, but over the last few decades they've been disappearing around the world a

Restoring mangroves in Indonesia

A hidden culprit in the 2004 Indian Ocean tsunami was degraded shorelines. Now Indonesia's moving to protect its coasts by restoring thousands of miles of mangrove swamps.

Restoring mangroves in Indonesia