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It turns out that the human brain takes a series of snapshots, very quickly, that appears to us as continuous perception. This is the way a movie filmstrip works–the dark line between each frame tricks the eye and the brain to perceiving a series of still images as moving. Could this be why it is so difficult for us to see the visitors–that they can control how they synchronize with our perception?

Just as the body goes through a 24-hour sleep-wake cycle controlled by a circadian clock, brain function undergoes such cyclic activity–but at a much faster rate.
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Sugar can make you stupid and margarine makes you aggressive and salt gives you high blood pressure, right? Wrong.

Nutritionists used to tell us that salt would raise our blood pressure, cause hypertension and increase the risk of premature death, but that argument has always been controversial and difficult to defend.

In the June 3rd edition of the New York Times, Gary Taubes quotes researcher Drummond Rennie as saying that the eat-less-salt message had "made a commitment to salt education that goes way beyond the scientific facts."
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Nearly one-tenth of hemisphere’s mammals are unlikely to outrun climate change.

A safe haven could be out of reach for 9% of the Western Hemisphere’s mammals, and as much as 40% in certain regions, because the animals just won’t move swiftly enough to outpace climate change.

For the past decade scientists have outlined new areas suitable for mammals likely to be displaced as climate change first makes their current habitat inhospitable, then unlivable. For the first time a new study considers whether mammals will actually be able to move to those new areas before they are overrun by climate change. read more

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Sperm quality is down everywhere, and the suspected causes range from estrogen in our drinking water to pesticides, but Israel worse off than other developed countries. This is a real problem for women looking for IVF fertilization.

In the August 16th edition of the Los Angeles Times, Edmund Sanders quotes Israeli researcher Ruth Har-Nir, who runs a sperm bank, as saying, "Under no circumstances can we accept sperm of this quality." She has noticed problems with Israeli sperm for a decade and says, "This is the trend.
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