Wind, solar becoming cost competitive: Chu

Clean sources of energy such as wind and solar will be no more expensive than oil and gas projects by the end of the decade, US Energy Secretary Steven Chu said Wednesday.

Estimating the environmental impact of Bitcoin mining

As an alternative to government-issued money, the cryptocurrency Bitcoin offers relative anonymity, no sales tax and freedom from bank and government interference. But some people argue that these benefits have an enormous ...

Some 250 health journals call for Africa climate help

Richer countries must increase climate support for African nations as accelerating impacts of global warming sicken and kill hundreds of thousands every year across the continent, scores of scientific health journals warned ...

New research shows record high for global carbon emissions

Global carbon dioxide (CO2) emissions are set to rise again in 2012, reaching a record high of 35.6 billion tonnes - according to new figures from the Global Carbon Project, co-led by researchers from the Tyndall Centre for ...

Oceans losing ability to absorb greenhouse gas

(PhysOrg.com) -- Like a dirty filter, the Earth's oceans are growing less efficient at absorbing vast amounts of carbon dioxide, the major greenhouse gas produced by fossil-fuel burning, reports a study co-authored by Francois ...

Fuel savings can pay for green energy shift

Making the global switch from climate-altering fossil fuels to renewables by 2050 would require an extra $1 trillion (880 billion euros) per year, but the bill will be covered by lower energy costs, a Greenpeace report said ...

Carbon dioxide emissions rising globally, but drop in China

The world's burning of coal, oil and natural gas this year is putting 1% more heat-trapping carbon dioxide in the air than last year, bad news for the fight against climate change but with an odd twist, according to scientists ...

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