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If aliens ever sent us a message, scientists hope to pick it up in a remote part of northern California. There, in a clearing nestled amid the volcanoes of the Cascade Range, 42 radio dishes point together at the sky. The dishes, each 20 feet across, form a single, giant scientific instrument called the Allen Telescope Array.

If you were to trace human evolution backward in time and space, you'd eventually end up in Africa. There, millions of years ago, animal species evolved to walk upright on two legs and spend more of their lives on the ground than in the trees.

This candy bar recipe features a layer of peanut caramel on top of a light peanut nougat, all enrobed in delicious chocolate. Their flavor closely resembles Snickers candy bars. This recipe yields 18 bars.

Rock candy is a simple sugar candy that can double as a science experiment. The process can take up to a week, but it's fun to watch the sugar crystals growing over time. Note that the exact quantity of sugar syrup you will use depends on the size of the jar you have.

A little after 9 a.m. on Sept. 15, 1990, the owner of a steel-products company pulled up to her office in Vinegar Hill, near the Brooklyn Navy Yard, and spotted a black garbage bag sitting on the sidewalk out front. She parked her car and went to move the bag when she noticed it leaking blood.

Egg in tiny doses curbs allergy Consuming small amounts over months stops reactions in some kids Web edition : Wednesday, July 18th, 2012 Exposure to increasing amounts of egg every day over two years can seemingly rid some children of an egg allergy, a new study finds.

Mideast violence goes way back Head wounds common in region throughout last 6,000 years Web edition : Wednesday, July 18th, 2012 Head-bashing hostilities haunted the Middle East long before the region's current conflicts arose. Skulls of people from what are now Israel and the West Bank, dating to different times during the last 6,000 years, display a consistently high rate of serious injuries.

Stronger storms may destroy ozone Extra water vapor up high coul trigger destructive chemical reactions Web edition : Thursday, July 26th, 2012 Climate change may spur the destruction of ozone in unexpected parts of the globe. In a warming world, many scientists believe, severe weather will become more common.

Yesterday, the Supreme Court of the State of Missouri reversed a lower court ruling in a 5-2 decision and upheld a 2007 law that would allow legal midwifery in the state.

Egg production after birth questioned Study finds no evidence of stem cells in mouse ovaries Web edition : Monday, July 9th, 2012 Women may indeed be limited to the number of eggs their ovaries contain at birth, a new study finds, directly contradicting recent research that suggests otherwise.

Ecstasy may cause memory problems Club drug's effects documented in new users Web edition : Thursday, July 26th, 2012 Light use of the club drug Ecstasy may cause subtle memory deficits. People who popped just three Ecstasy tablets a month over the course of a year saw their memory slip on a laboratory test, scientists report online July 25 in Addiction.

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Preschoolers demonstrate humankind's social-learning prowess Web edition : Thursday, March 1st, 2012 Preschool kids angling for a reward display social skills that may, on a grander scale, turn human cultures into cauldrons of change and innovation.

a choice of an article for summertime science in Sullivan room

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