The extruder is designed specifically for use with MakerBot PLA, a new plastic material based on corn, that Bre Pettis claims wont expand when exposed to the heat -- which means it wont contract when it cools, leading to smoother printed objects and less cracking.

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In this case, the failure of IPCC computer models to accurately predict atmospheric heat loss provided strong evidence that the IPCC computer models are based on faulty assumptions.

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The British Olympic rowing team has called on small Pennsylvania-based company Noble Fiber Technologies to create uniforms that will stand up to the intense Greek heat.

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The Welshman has so far been backed by the club's Abu Dhabi-based owners despite a disappointing start to the season, but he will undoubtedly feel the heat after this poor display.

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We're using more and more carbon-based fuels, generating greenhouse gases (such as carbon dioxide) that trap heat from the sun in our atmosphere.

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