The commercial future of solar energy may have gotten a big boost. Researchers have solved two major problems that had been hampering the efficiency and affordability of solar cells.
In Eastern Europe, "the open discussion of a tragedy represents a revolutionary change," writes Anne Applebaum of reaction to the plane crash Saturday that killed members of the Polish government.
Michael Lind thinks that changing immigration policy shouldn't be considered as a way to address projected Social Security and Medicare budget deficits.
New protostars that will eventually be 10 times as large as the sun have been discovered in the massive Rosette molecular cloud, 5,000 light years away.
Samuel Culbert writes that companies should do away with regularly scheduled performance reviews because they are "fraudulent" and reinforce an employee's feelings of being dominated.
Many liberals want President Obama's coming Supreme Court nominee to be in the mold of Justice William J. Brennan Jr. But today's court may not be a place for a consensus builder.
Having analyzed the economics of fighting climate change, Paul Krugman concludes that the costs are manageable. "All we need now is the political will."
New research shows that children who are spanked are more likely to become aggressive, building on a previous study showing that spanked children scored lower on cognitive tests.
The practice of treating the Catholic Church as a sovereign nation gives it outsize political influence and is damaging to women's equality, gay rights and reproductive freedom, write Kal Raustiala and Lara Stemple.
Republicans have been giddy about their prospects in the midterm elections, but Democrats could be saved if the economy recovers over the summer, writes James Surowiecki.
After 50 years of searching for intelligent life in outer space, astronomers still haven't made contact with extraterrestrials. "Does that mean we are alone in the universe after all?"
The infamous English Romantic poet Samuel Taylor Coleridge "was also a metacognitive theorist far ahead of his time," writes David Schneider.
Over time, stress can be very harmful to the brain, draining it of a certain protein involved with helping neurons in the hippocampus -- affecting memory, mood, and cognition.
Roland Martin makes the case that Confederate soldiers in the Civil War were domestic terrorists -- and shouldn't be honored any more than we honor Muslim extremists who try to kill Americans.
A beckoning light; a feeling of transcendence: these are two characteristics of a near-death experience that new research suggests may relate to amounts of certain chemicals in the blood.