Human Worlds
Sir David Attenborough reveals how humans are helping plants, many of which face extinction. From projects in Africa to re-seeding the landscape to rebuilding a Brazilian rainforest tree by tree, everyone can work to make our world a little wilder.
Previews + Extras
How Do You Pollinate 40 Million Almond Trees?
S1 E5 - 2m 33s
Central California is the biggest orchard in the world and almonds are one of its main crops. There are 40 million trees here with 20,000 flowers each, meaning there are billions of flowers in this one location. But there are no pollinators for the job, they were wiped out when the surrounding environment was cleared. So 40 billion bees are trucked in from across the U.S. when the trees bloom.
One Sharpshooter Way to Stop an Invasive Plant
S1 E5 - 2m 20s
Miconia, a plant native to Mexico, grows taller than native Hawaiian plants. A single plant can produce 10 million seeds a year, proliferating rapidly. Unable to land their helicopters, marksmen shoot Miconia plants at the stem with paintballs filled with herbicide while flying. Killing the whole plant without damaging any wild plants.
Seeds that Literally Run Away
S1 E5 - 2m 27s
The seeds of wild oats have an incredible ability to find the right spot to grow...they walk! This ability was selected out of cultivated oats to make it easier to gather the seeds and grow new crops.
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