HS-LS2-2
Use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity and populations in ecosystems of different scales.
- Health & Medicine
What ‘community’ spread of coronavirus means
Health experts warn there are probably many undetected cases already in the United States, raising chances the disease will soon be widespread.
- Health & Medicine
Search speeds up for vaccine against the new coronavirus
Scientists are investigating unusual ways to make drugs to prevent viral infections. One may even be able to treat already sick people.
- Animals
Analyze This: Shimmering colors may help beetles hide
Delve into data showing how brilliant colors that shift as a viewer — or predator — moves may help iridescent insects blend in.
- Health & Medicine
Explainer: What are allergies?
Sometimes the body’s immune system works too well, like a smoke alarm that blares every time you cook pizza. The results can range from uncomfortable to potentially life-threatening.
- Animals
Drones might one day capture a dolphin’s breath in midair
High-speed footage of dolphin spray reveals that droplets blast upward at speeds close to 100 kilometers per hour.
- Health & Medicine
The many challenges of corralling a coronavirus outbreak
The Chinese government has quarantined millions of people in hopes of limiting spread of a new coronavirus. But no one yet knows how much this will help.
- Earth
Newfound desert soil community lives on sips of fog
Lichens and other fungi and algae team up to form a 'grit-crust' on the parched soil of Chile’s Atacama Desert. Those species slake their thirst with moisture from coastal fog.
- Health & Medicine
Explainer: What is a coronavirus?
Coronaviruses are a diverse family of disease-causing agents. Some cause the common cold. Newer ones have emerged to pose more serious threats to people.
- Animals
Australian fires have imperiled up to 100 species
As massive wildfires consume huge swaths of Australia’s bush, untold species — many of them found nowhere else — are now threatened with extinction.
- Animals
Why some whales become giants and others are only big
Being big helps whales access more food. But just how big a whale can get is influenced by whether it hunts or filter-feeds.
- Brain
Scientists’ brains shrank after a long stay in Antarctica
The isolation of a long-term mission at an Antarctic research station shrunk part of crew members’ brains, a small study suggests.
- Health & Medicine
Globetrotting microbes in airplane sewage may spread antibiotic resistance
Along with harder-to-kill microbes, airplane sewage contains a diverse set of the genes that let bacteria evade antibiotics.
