Animals
Polar bears leave thousands of tons of food scraps for other species
The new finding quantifies how much of polar bears' food goes uneaten. As these bears decline, Arctic scavengers risk losing a critical food source.
Ecosystems
More Stories in Ecosystems
- Ecosystems
Scientists Say: Transplant
Transplant means to move something from one place to another. A transplant can involve something as small as a cell or as large as a whole population.
- Earth
Let’s learn about rivers
Rivers vary a lot in size and terrain, but all share a few basic features.
- Plants
Pollinators send out good vibrations — and plants respond sweetly
Snapdragon blooms can distinguish between the sounds of pollinators and thieves. They boost or drop the sugar in their nectar depending who’s arriving.
- Animals
Whale pee is an ocean bounty
Some migrating cetaceans move thousands of miles to their breeding grounds, where whale urine fertilizes ocean waters with valuable nutrients.
- Ecosystems
Scientists Say: Ecosystem
The interplay between living things and the physical environment gives rise to Earth’s thriving, life-sustaining ecosystems.
- Environment
Study uncovers secrets in water’s underground treks
Water's subterranean travels can be long, slow — and carry pollutants far from where they first got drawn into the Earth.
- Animals
Captive-breeding axolotls may help avoid their extinction
The axolotl program's success shows promise in helping protect this highly popular amphibian — currently found in only one lake — from dying out in the wild.
- Animals
The ‘bone collector’ caterpillar wears its prey as camouflage
For months, the caterpillar scavenges spider webs for scrapped insect body parts to cover its protective case. Later, that case will serve as its cocoon.
- Animals
Freshwater fish are in trouble: Here’s how we can help them
Human activities threaten the survival of many freshwater fish species. Research is now pointing to how we can best overcome those threats.
