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00:03:36
To understand how Earth’s climate system has changed over time, scientists need to find, develop and use natural recorders of temperature and precipitation. One natural thermometer comes in the form of alkenones: trans-fats produced by certain algae.

00:48:10
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: hair care products!

00:53:52
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: wire!

00:39:56
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: candles.

00:40:59
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: paint.

00:54:10
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: sugar.

01:01:45
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: baseball equipment.

00:47:04
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: plastic water bottles.

1:02:09
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: iron!

00:56:57
Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week’s “secret” ingredient: CD cases!