Marine plants

This is a picture of what is in sea water: billions of small plants known as phytoplankton.

These phytoplankton are responsible for producing about half of the oxygen in the atmosphere, and also for reducing the level of carbon dioxide (CO2),

In addition they provide food for tiny marine animals, known as zooplankton, at the start of the food chain.

Global warming is reducing the number of phytoplankton at a fast rate.

Plastiki, plastic boat

To raise environmental awareness

From San Francisco to Sydney is about 15,000km, and it is a long way for any ship.

But for a boat made from plastic bottles this journey is a real adventure. It took about 5 months to complete the trip and the owner of the boat hopes to raise awareness that using plastic bottles (one time only) is such a waste of resources.

Black Hole’s Bubble

We are looking at history

This is a gas bubble shooting from a black hole. It may not seem a very big bubble, but it is about 1,000 light years from end to end. And one light year is the distance that a beam of light travels in one year, ie very very far.

So what we can see happened a long time ago, it’s like looking at history.