Blanketing the Antarctic ice sheet in artificial snow might sound outlandish. But could geoengineering help to counteract runaway climate change? One thing is clear: many of the ideas could be very risky.
A range of technologies — loosely defined as 'geoengineering' — are being explored as responses to climate change. Yet their effectiveness, and whether they should be implemented at all, is debated among scientists.
Global warming-causing carbon emissions are reportedly set to more than double in price. It's a step in the right direction, say some climate activists, but others say the compromise still falls short of demands.
New research suggests that unless we rapidly cut greenhouse gas emissions we will have to extract far more CO2 from the atmosphere than we are technically prepared for.
Climate change is a global threat. So where to get the best perspective on the problem? Space! Scientists are monitoring Earth with satellites and running experiments in zero gravity to help save our fragile planet.
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