climate change

Science, Tech & Environment

Melting Arctic sea ice doubles the chances of harsh winters in other parts of the world

When most people hear the term "global warming," they naturally think of air temperature. In reality, more than 90 percent of the warming caused by greenhouse gases happens in the oceans. Much of this warming takes place in the waters in and around the Arctic Ocean, leading to increasingly rapid melting of sea ice. A new study links this melting to cold, harsh winters that are becoming more common in parts of the world.

Science, Tech & Environment

Geo Quiz and answer

For our Geo Quiz, quiz, we're looking for a rocky archipelago off Norway's northwest coast. The answer is Lofoten, where marine biologist Hieke Vester studies and records communication among marine mammals. The World's David Leveille has the story.

Conflict & Justice

Scott Brown and climate change

The election of an anti-cap & trade Republican to fill the seat of the late Senator Ted Kennedy is clouding prospects for a climate bill in the Senate. That makes prospects for strong global action on climate change even murkier. Peter Thomson reports.