Where Does Weed Come From? A New Study Suggests East Asia.

A group of biologists and other scientists said humans began growing cannabis about 12,000 years ago not just for food, but also for hemp and, yes, probably to get high.

#agriculture-and-farming, #central-asia, #east-asia, #europe, #genetics-and-heredity, #marijuana, #neolithic, #research, #science-advances-journal

A Mysterious Crater’s Age May Add Clues to the Dinosaur Extinction

Boltysh crater in Ukraine formed around the same time as the Chicxulub event, raising questions about its role in this tumultuous era.

#asteroids, #dinosaurs, #earth, #geology, #research, #science-advances-journal, #ukraine, #your-feed-science

A Million Years of Data Confirms: Monsoons Are Likely to Get Worse

The annual summer monsoon in South Asia begins this month. A new study points to more destructive storms.

#bay-of-bengal, #floods, #global-warming, #greenhouse-gas-emissions, #india, #indian-ocean, #monsoons, #rain, #research, #science-advances-journal, #south-asia

Flat Pasta That Turns Into 3-D Shapes — Just Add Boiling Water

The engineers are in the kitchen, again.

#3-d-devices-and-effects, #cooking-and-cookbooks, #engineering-and-engineers, #pasta, #research, #science-advances-journal, #your-feed-science

People of Color Breathe More Hazardous Air. The Sources Are Everywhere.

Researchers uncovered stark disparities between white people and minorities across thousands of categories of pollution, including trucks, industry, agriculture and even restaurants.

#air-pollution, #asian-americans, #black-people, #bullard-robert-d, #california, #census, #environmental-protection-agency, #factories-and-manufacturing, #fuel-emissions-transportation, #global-warming, #hispanic-americans, #income-inequality, #minorities, #population, #race-and-ethnicity, #research, #roads-and-traffic, #science-advances-journal, #united-states

Cold Tooth Pain’s Mysterious Molecular Culprit

Researchers figured out how a jolt of discomfort gets from the damaged outside of your tooth to the nerves inside it.

#biology-and-biochemistry, #mice, #proteins, #research, #science-advances-journal, #teeth-and-dentistry, #temperature, #your-feed-health, #your-feed-science

If You Look at Your Phone While Walking, You’re an Agent of Chaos

An experiment by Japanese researchers revealed how just a few distracted walkers really can throw off the movements of a whole crowd.

#cellular-telephones, #research, #roads-and-traffic, #science-advances-journal, #smartphones, #urban-areas, #walking, #your-feed-science

Can These Hedge Trimmers With Fins Avoid a Brush With Extinction?

Scientists have found that sawfish are thriving in some habitats while vanishing from others.

#conservation-of-resources, #endangered-and-extinct-species, #endangered-species-research-journal, #fish-and-other-marine-life, #florida, #research, #science-advances-journal, #your-feed-animals, #your-feed-science

Hear the Sound of a Seashell Horn Found in an Ancient French Cave

Music from the large conch probably hadn’t been heard by human ears for 17,000 years.

#archaeology-and-anthropology, #fish-and-other-marine-life, #france, #music, #musical-instruments, #pyrenees-mountains, #research, #science-advances-journal, #your-feed-science

Your Cat Isn’t Just Getting High Off Catnip

A new study hints that plants like catnip and silver vine may also protect your feline friend from mosquitoes.

#animal-behavior, #cats, #flowers-and-plants, #mosquitoes, #research, #science-advances-journal, #your-feed-science

Pig Painting May Be World’s Oldest Cave Art Yet, Archaeologists Say

The depiction of the animal on an Indonesian island is at least 45,500 years old, the researchers say.

#archaeology-and-anthropology, #art, #caves-and-caverns, #indonesia, #pigs, #research, #science-advances-journal, #sulawesi-indonesia, #your-feed-science

Hawaii’s Fresh Water Leaks to the Ocean Through Underground Rivers

If the water could be pumped to the surface, it could help alleviate shortages on the island.

#aquifers, #geology, #hawaii-the-big-island, #islands, #oceans-and-seas, #research, #rivers, #science-advances-journal, #water, #your-feed-science

Surviving Weed-Out Classes in Science May Be a State of Mind

Social ties to classmates and how students feel could be more important than innate ability when it comes to enduring early STEM courses.

#biology-and-biochemistry, #colleges-and-universities, #education, #friendship, #psychology-and-psychologists, #race-and-ethnicity, #research, #science-advances-journal, #science-and-technology, #your-feed-science

Spider Silk Is Stronger Than Steel. It Also Assembles Itself.

Scientists are figuring out the chemical triggers that turn the liquid stored in silk glands into a solid that’s tougher than Kevlar.

#biology-and-biochemistry, #proteins, #research, #science-advances-journal, #spiders

Heat and Drought Team Up More Frequently, With Disastrous Results

A new study finds that what used to be a rare weather double whammy has been occurring more frequently in recent decades because of climate change.

#drought, #global-warming, #research, #science-advances-journal, #weather, #wildfires

Australia’s Stinging Trees: Please Do Not Pet Them

Scientists have found a potent chemical that might give Australian giant stinging trees their extraordinarily painful punch.

#australia, #hazardous-and-toxic-substances, #indigenous-australians, #research, #science-advances-journal, #trees-and-shrubs, #your-feed-science

Aided by Modern Ingenuity, a Taste of Ancient Judean Dates

The harvest of the much-extolled but long-lost Judean dates was something of a scientific miracle. The fruit sprouted from seeds 2,000 years old.

#archaeology-and-anthropology, #dates-fruit, #deserts, #elaine-solowey, #israel, #jews-and-judaism, #kibbutz-ketura, #sarah-sallon, #science-advances-journal

Did Something Burp? It Was an Earthquake

Years of observations in central Italy show that more carbon dioxide percolates through Earth’s crust during periods of strong seismic activity.

#carbon-dioxide, #earthquakes, #geology, #greenhouse-gas-emissions, #italy, #research, #science-advances-journal, #your-feed-science

For Quick Coronavirus Testing, Israel Turns to a Clever Algorithm

Inspired by a mother’s question, the new method will be introduced across Israel this fall, just in time for flu season, and could be coming soon to the U.S.

#beersheba-israel, #coronavirus-2019-ncov, #israel, #laboratories-and-scientific-equipment, #science-advances-journal, #tests-medical, #your-feed-health, #your-feed-healthcare, #your-feed-science

He Doesn’t Mind Being Shared, Unless His Mates Try to Eat Each Other’s Eggs

A Brazilian frog species engages in reproductive behavior never seen in amphibians before.

#amphibians, #animal-behavior, #brazil, #frogs, #reproduction-biological, #research, #science-advances-journal, #your-feed-animals, #your-feed-science

Cave’s Clues Show It’s More Than Just Oldest Outhouse in the Americas

Preserved dung in Oregon’s Paisley Caves is helping to fill in some mysteries about some of the earliest people on our continent.

#caves-and-caverns, #clovis-nm, #feces, #native-americans, #north-america, #oregon, #research, #science-advances-journal, #your-feed-science