Several lines of evidence suggest that the sun is about to go quiet (25)
Irradiation is the only way to make food really safe (33)
How tiny crystals can improve picture quality (6)
A new technique lets archaeologists reconstruct the past in greater detail (7)
The world’s climate experts must work harder to avoid conflicts of interest
Our science and technology blog discusses photographs you can focus after the fact, examines synergism between Microsoft and Google and observes the Lindau Nobel laureate meetings
In our weekly Babbage podcast we discuss the FTC's investigation of Google, Microsoft's introduction of new cloud-based applications and Foursquare's $600m price tag
How to measure dinosaurs' body temperature by looking at their teeth
Science
Why penguins are afraid of the dark
Science Now
How movies mimic mimicry
Nature
Fallout from the Fukushima nuclear disaster is spreading throughout Japan’s energy industry
New rules may complicate the production of electric cars in China
How to cope with data overload
The end of the space programme will reverberate in Texas and beyond
The international protections against "blood diamonds" are in danger of collapse
A solar-powered aircraft arrives at the Paris Air Show
Technically, the world's first fully fledged open-source virtual currency is a marvel. It remains to be seen whether its economics make sense
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