MS-LS1-3
Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.
- Life
Explainer: Cells and their parts
Life as we know it depends on the coordination of structures inside cells — whether a living thing has only a single cell or trillions of them.
- Animals
La nutria soporta el frío, sin un cuerpo grande ni capa de grasa
Al mamífero más pequeño del mar no le es fácil mantenerse caliente. Ahora, los científicos han descubierto cómo sus células responden al desafío.
- Animals
A new drug mix helps frogs regrow amputated legs
The treatment helped frogs grow working limbs useful for swimming, standing and kicking. It’ll be a while before people can do that.
- Animals
See the world through a jumping spider’s eyes — and other senses
Scientists are teasing out the many ways the spiders’ vision, listening and taste senses differ from ours
- Animals
Living mysteries: Why teeny-weeny tardigrades are tough as nails
Tardigrades often live in cool, damp moss. Their cushy life has somehow prepared them to survive the lethal radiation of outer space.
- Life
In blazing heat, some plants open leaf pores — and risk death
When heat waves and droughts collide, water is precious. Some thirsty plants try to cool off by opening tiny pores — only to lose water even faster.
- Health & Medicine
Let’s learn about snot
For humans, snot plays a key role in fighting off diseases. Other animals have found different uses for the slimy stuff.
- Ecosystems
Secret forest fungi partner with plants — and help the climate
Forest fungi are far more than mere mushrooms. They explore. They move nutrients and messages between plants. They can even help fight climate change.
- Plants
Scientists Say: Phloem
Phloem is tissue that delivers food, made in leaves during photosynthesis, to the rest of a plant.
- Genetics
Explainer: What is RNA?
A partner to DNA, cells use this molecule to translate the instructions for making all of the many proteins that your body needs to function.
- Plants
Well-known wildflower turns out to be a secret meat-eater
Look closely at Triantha occidentalis, and you’ll see gluey hairs — and a trail of insect corpses on its stem.
- Health & Medicine
Scientists Say: Tonsils
The tonsils are pads of tissue in the throat that are part of the body’s immune system.
