Boots, boats and campfire wood can carry exotic seeds, plants and other non-natives into the wilderness.

Boots, boats and campfire wood can carry exotic seeds, plants and other non-natives into the wilderness.
It may sound like the Olympics, but you don’t have to go to extremes to get benefits that could last a lifetime. Regular exercises can raise or maintain bone mass in children and adults, reducing fracture risks as they age.
Strapped into a small holding device, the honeybee amiably wiggles its antennae. Like a toddler in a highchair, it seems to reach greedily for the dropper with sugar water that appears over its head. As its mouth opens, its tongue darts out for a taste of the sweet liquid.
We’ve seen what tsunamis can do. Now check out these websites to learn more about how they occur and what we can do to save lives.