While playing in her tree house, Jesse is intrigued by a falling sycamore seed that slowly spins to the ground. But when she sees acorns falling fast directly down to the ground, she must solve the riddle while learning about propellers and windmills and using technology to understand aerodynamics.
One of the most visited places in North America, Grand Canyon National Park is like an open window to Earth’s geologic history. The carving of the canyon’s walls by erosion left a cross-section of the Earth’s crust from millions and millions of years ago. See for yourself how grand and beautiful this gorgeous gorge really is.
It seems they're everywhere. But scientists believe bees are at risk of survival. What has put bees at risk and should we care? Imagine a world without these important pollinators and you'll see a world with fewer and fewer critical food sources.
Empires have been built from it, Wars have been fought for it. Imagine a world without oil. What alternatives do we have in a future with limited oil and other fossil fuels?
Look around. Plastic is everywhere. But some experts say today's plastic will be in our landfills for thousands of years to come. Imagine a world without plastic, in some communities, it's a new reality. Explore the good and the bad of plastic in our lives.
