People with extraordinary autobiographical memories also tend to have obsessive tendencies, researchers are learning. Brain scans reveal structural differences in the brains of these people, including a larger-than-normal caudate, a brain area linked to OCD.
For a few hundred dollars and a vial of spit, a growing number of companies will search your DNA to try to predict your disease risks. One of them hopes to mine their data to find out which genes are linked to Parkinson's disease.
America's rate of teen pregnancies is the highest in the developed world. The good news is that the rate is declining dramatically, but it takes more than talking about sex and contraception to keep the numbers falling.
The city has approved its first aerial spraying in 45 years to combat an outbreak of West Nile virus. Over the years, the chemicals used for aerial spraying have become much safer for everything and everyone involved — save the mosquitoes.
About 4 percent of teenage boys and 6 percent of teenage girls have PTSD. Many of them have physical symptoms related to their stress, including problems sleeping, weight gain and hair loss. Researchers are trying to identify which parts of the brain are affected by PTSD so they can come up with more ways to treat the disorder.
The Reinvent the Toilet Challenge asked engineers to dream up a replacement for the antiquated flush toilet. Michael Hoffmann and his team at Caltech responded with a solar-powered toilet that disinfects waste and reuses wastewater to flush. Better yet, it pumps out hydrogen gas for use in fuel cells.
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