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Climate change is shifting weather extremes, increasing the frequency of drought and heat waves and the intensity of rainstorms -- changes that will require the world's governments to change how they cope with natural disasters, the Intergovernmental Panel on Climate Change (IPCC) said today. [More]

(PhysOrg.com) -- Researchers have fabricated a fluidic antenna that can change its shape, and therefore the frequency at which it resonates, in response to pressure in a controlled and predictable manner. Shape-changing antennas like this one could be used as sensors, as well as offer new routes of fabricating stimuli-responsive electronics that change their function on demand.

Whether they know it or not, anyone who's ever gotten a speeding ticket after zooming by a radar gun has experienced the Doppler effect – a measurable shift in the frequency of radiation based on the motion of an object, which in this case is your car doing 45 miles an hour in a 30-mph zone.

The Catlin Arctic Survey is a unique collaboration between polar explorers and scientists to gather data on the impacts of climate and environmental change in the Arctic. This 10-week international scientific expedition will travel to the furthest reaches of the Arctic to research the impact of melting ice caps on the world's oceans and weather systems