The decline in the rate of reef-building along the Great Barrier Reef is severe, sudden, and unprecedented in at least 400 years. Ocean acidification is a leading suspect.
With enough investment, geothermal power could satisfy 10 percent of the US energy diet, energy experts say.
Job prospects and dreams fade with crisis.
Wealthy countries seek land in Cambodia, Madagascar, and Brazil.
Acidification caused by carbon emissions could bring some oceans to a tipping point.
A British seed bank worries that lack of funding will stop the work of saving the world's most diverse collection of seeds.