Uncategorized
- Archaeology
Vikings lived in North America by at least the year 1021
Wooden objects provide the most precise dating yet of a Norse settlement in Newfoundland.
- Animals
Scientists found modern domestic horses’ homeland in southwestern Russia
Two genes tied to endurance and docility may help explain the horses’ success in spreading across Eurasia.
- Physics
Here’s the physics of why ducklings swim in a row behind their mother
By paddling in just the right spots, ducklings save energy by surfing their mom’s waves, and pass along the benefit to siblings down the line.
- Health & Medicine
Here’s what we know about booster shots for Moderna’s and J&J’s COVID-19 vaccines
Immunity against the coronavirus is waning, but additional doses of the same or different COVID-19 vaccines could help protect vulnerable people.
- Animals
An agile gecko found in India named after the legendary Jackie Chan
A hard-to-catch gecko species is named after martial artist Jackie Chan. Skin patterns, like one resembling a galaxy, inspire other newfound geckos’ names.
- Health & Medicine
COVID-19 testing in schools works. So why aren’t more doing it?
School COVID-19 testing programs can keep kids in class and safe, but face challenges ranging from deciding on a testing strategy to parental buy-in.
- Physics
An atomic clock measured how general relativity warps time across a millimeter
A record-breaking result reveals the precision achievable by atomic clocks, letting researchers detect slightly faster ticking over a tiny height change.
- Space
5 cool things to know about NASA’s Lucy mission to the Trojan asteroids
NASA’s Lucy is the first spacecraft to head to the two giant clumps of space rocks that tag along in Jupiter’s orbit.
- Animals
Barnacles are famed for not budging. But one species roams its sea turtle hosts
Once settled and glued to the substrate, adult barnacles stay put. But turtle barnacles upend this trend, sliding slowly across their reptilian rides.
- Earth
Earth is reflecting less light. It’s not clear if that’s a trend
A decrease in Earth’s reflectance shows our planet is absorbing more solar radiation, but it’s not clear if the trend will last.
- Astronomy
A Jupiter-like planet orbiting a white dwarf hints at our solar system’s future
A new planet is the first ever discovered that is orbiting a white dwarf and resembles Jupiter in both its mass and its distance from its star.
- Animals
Huge numbers of fish-eating jaguars prowl Brazil’s wetlands
Jaguars in the northern Pantanal ecosystem primarily feed on fish and caiman, living at densities previously unknown for the species.
