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Tiki the Penguin's guide for kids which explains why so much life on Earth is in trouble
Tiki the Penguin's guide for kids which explains why so much life on Earth is in trouble
I'm a dodo, now extinct because of humans

In the beginning...

Happy birthday!
Tiki clowning around for the birthday of Life on EarthBirthday cake and animal party for the planet and its living things
Life on Earth is 3,500 million years old today... well, more or less. Living things have certainly been around on our planet for a very long time.

Earth Image: NASA https://www.flickr.com/photos/gsfc/This wonderful blue planet is home to all life. It's the only home we have so it needs to be cared for.

feet of timeIn case you hadn't noticed, 3,500 million is a very long time indeed. (In fact, life may be as much as 4 billion years old!) Imagine that each of those years was one foot in length. How far would that line of feet run for?

Click the answer of your choice.

But now life is in trouble and I'm afraid the reason is you people. I'll come to that in a moment but first,Professor Tiki prepares to speak







Bacteria don't really look like this - but they're more fun drawn this way! Early life on Earth was very simple — just tiny blobby things called bacteria.
After a while, slightly different green blobby things called algae began to appear.
Algae are usually green because they contain chlorophyll These had 'learned' one very special thing: how to use the sun to make food. This was to be the most important development ever for future life on the planet. These tiny green blobs were the first simple plants. Algae eventually gave rise to plants with a stem and leaves like this one And without plants, no animals could exist. If you were to hop into a time machine and go back 3,500 million years, you'd quickly die for two reasons: the air you breathed would be poisonous and there would be no food.

You can actually do this with my Time Machine !
In fact, most algae form strings rather than blobs.

So why isn't the air we breathe today poisonous?

This is my life in danger home page!       forward to 'Changing the air'

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