Health & Medicine
‘Blastoids’ made of stem cells offer a new way to study fertility
Newly created “blastoids” could help with research on nonhormonal contraceptives and fertility treatments.
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Cover Story
A century of quantum mechanics questions the fundamental nature of reality
A century after the quantum revolution, a lot of uncertainty remains.
Science Visualized
Notebook
Chemistry
Here’s the chemistry behind marijuana’s skunky scent
Newly ID’d sulfur compounds in cannabis flowers give the plant its telltale odor. One, prenylthiol, is what also gives “skunked beer” its funky flavor.
Features
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Clovis hunters’ reputation as mammoth killers takes a hit
Early Americans’ stone points were best suited to butchering the huge beasts’ carcasses, scientists contend.
More Stories from the January 15, 2022 issue
- Planetary Science
This tiny, sizzling exoplanet could be made of molten iron
A newly discovered exoplanet that whips around its star in less than eight hours is smaller than Earth, as dense as iron and hot enough to melt.
- Climate
Climate change could make Virginia’s Tangier Island uninhabitable by 2051
Tangier Island could be lost to rising seas sooner than previously realized. Whether to save the island or move its residents remains undecided.
- Paleontology
This dinosaur had a weapon shaped like an Aztec war club on its tail
The flat and spiky tail club of a newly discovered ankylosaur was unique, even for this often weirdly armored group of dinosaurs.
- Oceans
The Southern Ocean is still swallowing large amounts of humans’ carbon dioxide emissions
A 2018 study suggested the ocean surrounding Antarctica might be taking up less CO₂ than thought, but new data suggest it is still a carbon sink.
- Health & Medicine
A massive 8-year effort finds that much cancer research can’t be replicated
A project aiming to reproduce nearly 200 top cancer experiments found only a quarter could be replicated.
- Anthropology
Ancient footprints suggest a mysterious hominid lived alongside Lucy’s kind
A previously unknown hominid species may have left its marks in muddy ash about 3.66 million years ago in what is now East Africa.
- Planetary Science
Ingenuity is still flying on Mars. Here’s what the helicopter is up to
NASA’s Ingenuity craft was originally planned to operate only 30 Martian days.
- Microbes
A bacteria-virus arms race could lead to a new way to treat shigellosis
As bacteria that cause shigellosis evolve to escape a virus, the microbes may become less deadly, a hopeful sign for “phage therapy.”
- Climate
Wildfire smoke may ramp up toxic ozone production in cities
A new study reveals how wildfire smoke produces toxic ozone and how urban air pollution could exacerbate the problem.
- Quantum Physics
Physicists have coaxed ultracold atoms into an elusive form of quantum matter
Quantum spin liquids could be used to help protect fragile information in quantum computers.
- Chemistry
Here’s the chemistry behind marijuana’s skunky scent
Newly ID’d sulfur compounds in cannabis flowers give the plant its telltale odor. One, prenylthiol, is what also gives “skunked beer” its funky flavor.
- Health & Medicine
Tiny living machines called xenobots can create copies of themselves
When clusters of frog cells known as xenobots form a Pac-Man shape, they are especially efficient at replicating in a new way, researchers say.
- Life
Albatrosses divorce more often when ocean waters warm
In one part of the Falkland Islands, up to 8 percent of the famously faithful birds ditch partners in years when the ocean is warmer than average.
- Space
50 years ago, NASA’s space shuttle program got the green light
For over 30 years, space shuttles helped revolutionize science. Now, NASA is tackling new frontiers with help from commercial spaceflight companies.
