News
- Genetics
Ancient Siberian bones clarify Native American origins
Some New World ancestors came from western Eurasia, not East Asia.
- Planetary Science
Ancient Martian meteorite preserves chunks of planet’s early crust
Rock could reveal what Mars was like 4.4 billion years ago.
- Animals
Comb jelly immune system can spot old enemies
Animal at base of family tree could help researchers understand the evolution of immunity.
- Ecosystems
Virus-blocking insects taking over Vietnamese island
Field trial tests mosquitoes that may stop the spread of dengue infection.
- Anthropology
Human ancestors threw stone-tipped spears at prey
African discoveries show that hunting weapons thrown from a distance appeared by 279,000 years ago.
- Health & Medicine
Quick cooling after cardiac arrest questioned
For a decade, doctors have made induced hypothermia standard practice.
- Animals
Mothballs, rubbing alcohol score poorly in tests of DIY bedbug control
Mattress encasement, dry ice in bags, hot clothes dryers do help control infestation.
- Health & Medicine
Changes in malaria parasite may make Africans more susceptible
Ominous signals are emerging simultaneously in population studies and under the microscope that Plasmodium vivax, a malaria parasite well known in Asia and Latin America, may have found a way to infect Africans.
- Genetics
Dogs’ origins lie in Europe
First domesticated canines did not live in China or Middle East, a study of mitochondrial DNA finds.
- Physics
Single photon detected but not destroyed
Researchers build first instrument that can witness the passage of a light particle without absorbing it.
- Health & Medicine
Prion mutation yields disease marked by diarrhea
Rare prion ailment starts in adulthood, attacking the gut before brain.
- Humans
Bigger numbers, not better brains, smarten human cultures
An experiment using a computer game supports the idea that big populations drove the evolution of complex human cultures.
