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SJC Science
Science education which informs, enriches and prompts action.
Curated by Peter Phillips
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Timeline of Life on Earth.

The history of life on Earth began 4.6 billion years ago. In this short clip that time is represented by a 100m line in our school yard decorated with events...
Peter Phillips's insight:

Earth cooled, its atmosphere formed and simple life evolved which breathed out oxygen, creating the air we enjoy today. It took a long time for life to be able to live on the land, but once it did, it exploded, with every type of animal and plant. In a 100 metre line, homo sapiens evolved in the last 4 cm. In 2013 there were 7 billion of us on the planet. Lets look after it and each other.

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Earth's ozone layer begins repairing itself › News in Science (ABC Science)

Earth's ozone layer begins repairing itself › News in Science (ABC Science) | SJC Science | Scoop.it
@intranautt http://t.co/6BrGMYQMLq
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