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Medicine

Submission + - Evolution Could Explain Why Placebo Sometimes Works Just as Well as Drugs (medicaldaily.com)

An anonymous reader writes: There may be an evolutionary explanation for the placebo effect, according to a new finding that suggests that the immune system has a mind-controlled on-off switch to save energy and that people are able to heal themselves.
Scientists questioning why people need to wait for the placebo before the recovery process from an infection begins have now found something similar to the placebo effect in animals.
Researcher studied Siberian hamsters and found that the rodents' bodies did little to fight infection if the lights above their laboratory cages mimicked the short days and long nights of winter, but mounted a full immune response if the lighting was changed to replicate summer conditions, according to a study published in the journal Annals of Family Medicine.

Science

First Black Hole For Light Created On Earth 244

An anonymous reader writes "An electromagnetic 'black hole' that sucks in surrounding light has been built for the first time. The device, which works at microwave frequencies, may soon be extended to trap visible light, leading to an entirely new way of harvesting solar energy to generate electricity. A theoretical design for a table-top black hole to trap light was proposed in a paper published earlier this year by Evgenii Narimanov and Alexander Kildishev of Purdue University in West Lafayette, Indiana. Their idea was to mimic the properties of a cosmological black hole, whose intense gravity bends the surrounding space-time, causing any nearby matter or radiation to follow the warped space-time and spiral inwards."

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