News tagged with solar heat

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Abrupt permafrost thaw increases climate threat

As the Arctic warms, greenhouse gases will be released from thawing permafrost faster and at significantly higher levels than previous estimates, according to survey results from 41 international scientists ...

Nov 30, 2011
4.4 / 5 (13) 6 | with audio podcast

Temperature differences give rise to electricity

More than half of today's energy consumption is squandered in useless waste heat, such as the heat from refrigerators and all sorts of gadgets and the heat from factories and power plants. The energy losses ...

Nov 09, 2011
4.1 / 5 (7) 3

Testing geoengineering

Solar radiation management is a class of theoretical concepts for manipulating the climate in order to reduce the risks of global warming caused by greenhouse gasses. But its potential effectiveness and risks are uncertain, ...

Oct 26, 2011
3.7 / 5 (3) 1 | with audio podcast

Device can heat home, save money

(PhysOrg.com) -- A new polymer-based solar-thermal device is the first to generate power from both heat and visible sunlight – an advance that could shave the cost of heating a home by as much as 40 percent.

Apr 19, 2011
4.8 / 5 (12) 16 | with audio podcast

Thermoelectric materials: recycling energy

(PhysOrg.com) -- For some years now, NASA has been using what are called thermoelectric materials to power its space probes. The probes travel such great distances from our sun that solar panels are no longer ...

Mar 31, 2011
5 / 5 (3) 4 | with audio podcast

Kenyans swap carbon roles to save forest

Mwakitau Kaleghe used to scratch out a living from burning charcoal, culled from trees whose felling helped turn a rich tropical woodland in southern Kenya into a desolate mosaic.

Mar 08, 2011
1 / 5 (1) 1