What’s the atmosphere? Weather science
Earth's atmosphere: Did the Earth look like this right after it cooled down? What is the atmosphere? The atmosphere is the air that is wrapped all around a planet. Read more [...]
Earth's atmosphere: Did the Earth look like this right after it cooled down? What is the atmosphere? The atmosphere is the air that is wrapped all around a planet. Read more [...]
Mars, the way the planet looks from space Which planet is Mars? The closest planet to Earth is Mars, and Mars is also the planet that seems most likely to have life on [...]
Molten lava: the beginnings of planet Earth What is the Earth made of? Most of the molecules that smashed together to make the Earth were iron. The smashing together released a [...]
A moss-covered rock During the Cambrian period, about 540 million years ago, some early plants evolved from earlier algae that could live on land, outside of the water. These plants [...]
A prokaryote (seen through a microscope) What does "prokaryote" mean? The simplest living cells are called prokaryotes, which is Greek for "before the nucleus" - these are cells that were [...]
Chloroplasts (seen through a microscope) Photosynthesis is the way some cells on Earth pull in light from the sun and use it to make energy to repair and reproduce themselves. [...]
Will your shadow keep the grass from growing? You can see for yourself how important sunlight is to plants. Take any patch of green grass, and cover some of the [...]
Chloroplasts (seen through a microscope) - how did chloroplasts evolve? When did chloroplasts evolve? The first cells that could make sugars out of sunlight and carbon dioxide and water by [...]