Animals
At last: How poison dart frogs ship defense toxins to their skin
A liver protein appears to help the amphibians collect and move toxins from their food to their skin. Those toxins can defend the frogs from predators.
Life
More Stories in Life
- Microbes
Let’s learn about useful bacteria
Bacteria do many useful jobs almost everywhere on Earth, from the soil to the seafloor to our stomachs.
- Health & Medicine
Family, friends and community inspired these high school scientists
When looking for research ideas, listen to the people around you. What problems are they facing? What could you do to help?
- Animals
Scientists still aren’t always sure why dogs wag their tails
Your dog is wagging its tail. That must mean it’s happy, right? Maybe not. Scientists know less about what’s behind this behavior than you might think.
- Brain
Scientists Say: Confirmation Bias
Confirmation bias is the tendency to seek out and believe information that agrees with what we already think.
- Plants
To spy this palm’s blooms and fruits, start digging underground
Plants across 33 families are known for subterranean flowering or fruiting. But this palm is extremely rare. It does both.
- Physics
Here’s why blueberries aren’t blue — but appear to be
Blueberries actually have dark red pigments — no blue ones — in their skin. Tiny structures in the fruits’ waxy coat are what make them seem blue.
- Animals
Here’s why thousands of octopuses gather at the ‘Octopus Garden’
Underwater cameras and other instruments investigated why so many pearl octopuses gather here to mate and nest.
- Life
Bacterial fossils exhibit earliest hints of photosynthesis
Microscopic fossils from Australia suggest that some bacteria evolved structures for oxygen-producing photosynthesis by 1.78 billion years ago.
- Animals
Pollen-seeking honeybees sometimes turn to theft
Observations of honeybee pollen theft from bumblebees suggest it may be a crime of convenience, based on ease of access to the prized food.
