Creation and the Jewish Bible
God creates the Sun and the Moon, in a medieval European painting God creates order from Chaos Many of the Jewish people in West Asia believed that at the beginning of time [...]
23
08, 2017
20
07, 2017
Plants in India – What grew there?
An Indian man selling mangoes When people first came to India, about 60,000 BC, they found some plants that they already knew about, like figs and onions. There were also a lot of new [...]
25
06, 2017
Silurian period – Fish get jaws
Silurian period: Trout swimming When was the Silurian period? The beginning of the Silurian period was about 443 million years ago. Some environmental problem at the end of the Ordovician [...]
24
06, 2017
Proterozoic Eon – eukaryotes to worms
Two and a half billion years ago, the Archaean Eon ended and the Proterozoic Eon began. Trillions of prokaryote cells lived in Earth's oceans. Some of these cells could photosynthesize their energy [...]
13
06, 2017
Ancient Egyptian plants – papyrus and palm trees
Date palm Palms and papyrus The plants that grew in ancient Egypt were very different from plants that grow in America or Britain. The lotus and the papyrus plants, for [...]
1
06, 2017
Oxygen and candles – Science project – Chemistry
Candles burn carbon using oxygen You can do experiments to show that you need oxygen for a fire to burn. Light a candle, and when it is burning well, put [...]
1
06, 2017
Plant food – a nitrogen project – Chemistry
A jug of nitrogen fertilizer It's pretty easy to see just how much a plant needs nitrogen to grow. Just take any two plants (they could be small house plants, [...]
30
05, 2017
What is a vascular system? Plant biology
Veins in a leaf About 600 million years ago, the first plant cells evolved to be different from animal cells, and from earlier prokaryote cells, because they had a stiff [...]
30
05, 2017
What are conifers? Pine trees, gymnosperms
Pine trees - A Spruce tree is a type of gymnosperm and conifer Too dry for ferns and moss Near the end of the Carboniferous period, about 300 million years [...]
30
05, 2017
Collecting pine cones – Gymnosperms project
Squirrel eats pine seeds from a cone Go take a walk outside in the fall and collect pine cones on the ground. How many different kinds of pine cones can [...]
