The world must halt its increase in greenhouse gases within the next three years, cut them by 43% in the next seven, and eliminate them entirely by 2050 to avoid catastrophic and irreversible climate change impacts this century, according to a new report released this week by the Intergovernmental Panel on Climate Change (IPCC).

Renewable energy prices have fallen by more than 70 percent in the last decade, driving more Americans to abandon fossil fuels for greener, less-polluting energy sources.

Sponges in coral reefs, less flashy than their coral neighbors but important to the overall health of reefs, are among the earliest animals on the planet. 

The UK is investing in modernising its Antarctica and Arctic research facilities, with total funding of £670 million, including £290 million announced today.

Tools that can produce accurate models of indoor air quality are to be designed in a project led by the University of Birmingham.

Clouds come in myriad shapes, sizes and types, which control their effects on climate. 

Generating power while purifying the environment of greenhouse gases should be achievable using bacteria.

Climate change directly affects groundwater resources. 

NASA's Hubble Space Telescope has determined the size of the largest icy comet nucleus ever seen by astronomers.

Astronomers have identified a rapidly growing black hole in the early universe that is considered a crucial "missing link" between young star-forming galaxies and the first supermassive black holes.