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Natural Selection is one of the main concepts found within the theory of evolution. It was discovered by Charles Darwin and Alfred Russel Wallace though Darwin championed the idea in his book "On the Origin of Species".
A look at how bats avoid bumping into each other at night; why a bottlenose dolphin seeks out the help of a scuba diver; are cicadas expert mathematicians.
S1E21 • Nature's Strangest Mysteries: Solved • 2019 • Nature
Issues of genetics and DNA are constantly cropping up in the news from food production and health, to legal cases and ethics. We hear about DNA in movies like Jurassic Park and X-men, we learn bits and pieces about it from TV shows like Dexter and and CSI, but what exactly is DNA, and how does it work?
In this first episode they travel from July to the December solstice, experiencing spectacular weather and the largest tides on Earth. To show how the Earth's orbit affects our lives, Helen jumps out of an aeroplane and Kate briefly becomes the fastest driver on Earth.
1/3 • Orbit: Earths Extraordinary Journey • 2012 • Nature
The need for fresh water is as strong as ever. However, the supply is becoming increasingly unpredictable for all manner of species.
7/8 • Our Planet • 2019 • Nature
It is an unexpected and contrasting journey through America's iconic and varied landscapes as the Mississippi flows from source to mouth. The Mississippi's greatest surprise is its incredible reach. Its fingers stretch into nearly half of the USA, collecting water from 31 states. More than any other, this one river has helped unite the many and varied parts of America.
3/3 • Earth's Great Rivers • 2018 • Nature