Cold-water fish, snow-dwelling bugs and some grasses have evolved natural antifreeze proteins to avoid turning to ice cubes. Peter Davies, a biologist at Queen's University in Ontario, discusses how these antifreeze substances work, and their applications for human problems--like keeping the ice out of ice cream.
In Full Planet, Empty Plates: The New Geopolitics of Food Scarcity, Lester Brown says the world's food supply is tightening, and the reasons are many. People in developing countries are eating more meat, a grain-intensive food; farmers are overpumping, causing water tables to fall; and crop yields have plateaued, despite technological advances.
That's right in line with economists' expectations and is another sign of steady, though modest, growth in employment. In November, employers added an estimated 161,000 jobs. The average monthly gain in 2012 was 153,000 jobs, BLS says. That's the same average as in 2011.
Children often show signs of trauma from their experiences inside Syria. A U.N. team interviewing Syrian children in a refugee camp found that most lost a loved one in the fighting, and almost half have post-traumatic stress disorder.
First, people wore suits and ties, dresses or skirts to work. Then came casual Fridays. Then the tech industry destroyed dress codes. Congress is one of the last places people dress up, and we know how that's turned out.
There is plenty in the movie Promised Land that will prompt energy industry insiders to roll their eyes. But the overall issues explored in the film, which is being widely released in theaters Friday, are very real.
A process called hydraulic fracturing has led to drilling booms that are transforming rural communities into industrial zones. Hydraulic fracturing, or "fracking," makes it possible to tap into natural gas reservoirs deep underground. But first, gas companies have to convince landowners to allow them to drill.