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Generations of giraffes. Shutterstock.

Curious Kids: what is a species?

It can actually be very tricky to define a species, but in the 1900s, scientists found a pretty good way.
‘Mayflower in Plymouth Harbor’ by William Halsall (1882). Pilgrim Hall Museum

Why the Pilgrims were actually able to survive

The Pilgrims repeatedly thanked God for their good fortune. But without two earlier developments, the entire undertaking at New Plymouth would have likely failed.
Getting enough physical activity can be challenging for women and girls, because they have to negotiate complex gender roles, stereotypes and cultural narratives about the body. (Shutterstock)

Girls and women need more time in nature to be healthy

Women and adolescent girls say that being outdoors in nature offers opportunities to gain confidence in physical activity.
For a megacity, Tokyo is rich in trees. gillyberlin/flickr

We calculated how much money trees save for your city

In an increasingly urban world, trees can make a major difference. One study found that, for every dollar invested in planting, megacities saw a $2.50 return on their investment.

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