Life
We summarize the week's scientific breakthroughs every Thursday.
- Life
Semen seems to counteract microbicides that kill HIV
Semen seems to inhibit most microbicides from killing HIV, but one that targets a receptor on cells remains effective, suggesting a promising approach against HIV.
- Life
Study finds lack of evidence for infanticide link to monogamy
A new study contradicts idea that the rise of infanticide among mammals drove the evolution of monogamy.
- Animals
Giant otters hum, scream, say ‘hah’ and more
Often overlooked as vocalists, giant otters make 22 different calls as adults and 11 kinds of baby babble.
- Neuroscience
Stopped brain clock saves memory in hamsters
Broken timekeeper in brain may explain some memory problems, hamster study suggests.
- Animals
Few humans were needed to wipe out New Zealand’s moa
A new study finds that the Maori population was still small when it managed to drive several species of large, flightless birds extinct.
- Genetics
Rare mutations may protect against heart disease
Rare mutations in a key gene seem to lower bad cholesterol and provide protection against heart disease.
- Health & Medicine
Foul smells during sleep may help smokers quit
A night of smelling rotten eggs and fish while inhaling cigarette odors makes smokers reach for fewer cigarettes upon waking.
- Animals
Snake moms-to-be crave toxic toads
The snake Rhabdophis tigrinus seeks out toxic toads to eat when breeding. The snakes can then pass the poisons on to her offspring as chemical defenses.
- Neuroscience
Serotonin lies at the intersection of pain and itch
Serotonin may help relieve pain, but it also causes itch. A study shows why scratching just makes it worse.
- Genetics
Human thoughts control mouse genes
Human brain waves trigger light that activates protein production in rodents.
- Neuroscience
Chronic marijuana use may alter the brain
Long-term marijuana use may lead to reduced gray matter and increased white matter connectivity in the brain.
- Genetics
Genes tell tale of cat domestication
A peek into cats’ genetic makeup may help reveal how hissing wild felines became purring tabbies.
