Coral decline - due to climate change?

Coral growth in Australia's Great Barrier Reef has slowed to its most sluggish rate in the past 400 years. The decline endangers the species the reef supports, say researchers from the Australian Institute of Marine Science. They studied massive porites corals, which are several hundred years old, and found that calcification has declined by 13.3% since 1990. Global warming and the increasing acidity of seawater are to blame, they write in Science journal. Read the full story here. Miss M.

Artic losing ice...

The Arctic is losing its old, thick ice faster than in previous years, according to satellite data.

The loss has continued since the end of the Arctic summer, despite cold weather across the northern hemisphere.

The warm 2007 summer saw the smallest area of ice ever recorded in the region, and scientists say 2008 could follow a similar pattern.

Older floes are thicker and less saline than newly-formed ice, meaning they can survive warm spells better.

Ice more than two years old now makes up about 30% of all the ice in the Arctic, down from 60% two decades ago.

The shrinking of Arctic ice has global implications, as its white surface reflects solar energy back into space whereas the open ocean absorbs it. Read the full story here. Miss M.