Uncategorized
- Environment
PCB levels still high in Europe’s killer whales, smaller dolphins
PCBs banned for decades still show up at extremely high concentrations in Europe’s killer whales and other dolphins.
- Science & Society
Insights into sexes’ differing responses to stress
Chronic stress takes its toll on everyone. One of our reporters follows a line of research suggesting that stress hits women harder (or at least differently) than men.
- Astronomy
Readers ponder mysterious origins of oxygen on comets and Earth
Readers pondered the origins of oxygen within a comet and during Earth's history.
- Life
Signs of food allergies may be present at birth
Overactive immune cells may prime babies for food allergies.
- Genetics
Drug candidate fails to improve symptoms of fragile X syndrome
A drug designed to treat fragile X syndrome has proven ineffective in clinical trials.
- Archaeology
Ancient stone tools raise tantalizing questions over who colonized Sulawesi
Hominids reached an island not far from hobbits’ home by around 200,000 years ago.
- Anthropology
Iceman has the world’s oldest tattoos
A more than 5,000-year-old European mummy gets his tattoos confirmed as world’s oldest.
- Animals
Capturing the wonders of hummingbird flight
Recent computer simulations reveal how hummingbirds manipulate the air around them to aid in flight.
- Animals
Ants don’t make decisions on the move
Worker ants stand still while processing environmental cues and planning their next moves, a new study suggests.
- Astronomy
Clues left at a galactic hit-and-run
Scientists may have discovered a dwarf galaxy that triggered a “galaxy quake” when it buzzed by the Milky Way a few hundred million years ago.
- Astronomy
Red giants map how the Milky Way grew
A new catalog of the ages of our galaxy’s stars confirms that the Milky Way grew from the inside out.
- Health & Medicine
Mom’s weight during pregnancy shapes baby’s health
Obesity at conception or during pregnancy is a big problem that's getting bigger: New evidence says a child's mental health could be at stake.
