Life
- Animals
Scientists Say: Medullary bone
Medullary bone is a layer that forms inside bird and dinosaur bones. It’s a source of the calcium in eggshells.
- Plants
How to grow your own science experiment
Does fertilizer help plants grow better? You might expect it to, but how can you know? This experiment will help you test it yourself.
- Oceans
Analyze This: Shipwrecks provide a home for bottom-dwelling fish
Fish have found a habitat in a submarine and freighter that sunk to the seafloor during World War II.
- Animals
Around the world, birds are in crisis
Human activities around the world are threatening bird species. Numbers of even some of the most common species are starting to fall.
- Life
Ogre-faced spiders listen closely to snatch bugs from the air
Ogre-faced spiders can hear prey sneaking around behind them. Low frequencies can trigger a blind, backwards attack.
- Health & Medicine
Scientists Say: Apoptosis
When it’s time for cells to die, they need to do it carefully, so they don’t harm other cells.
- Plants
Please do not touch the Australian stinging tree
Stinging-tree leaves look soft and inviting, but one touch delivers agony. Structurally, the plant's painful chemical looks a lot like spider venom.
- Animals
The diabolical ironclad beetle is nearly unsquishable
The diabolical ironclad beetle is an incredibly tough little creature. A peek inside its exoskeleton reveals what makes it virtually uncrushable.
- Health & Medicine
Scientists Say: Puberty
Puberty is a time when hormones surge and people develop the ability to have children. But it’s so much more than that.
- Animals
This snake rips open a living toad to feast on its organs
A particularly gruesome way to kill may help small-banded kukri snakes avoid a deadly poison secreted from the neck and backs of some toads.
- Genetics
Scientists Say: Evolution
Evolution is how species change over time. Individuals in the group vary, and some will pass on their genes. Over time, the whole species changes.
- Brain
Kids use more of the brain than adults do to process language
The brain continues to grow and mature throughout childhood. One big change occurs in which parts of the brain turn on as someone processes language.
