David concludes his epic history of the evolution of flight with an exploration of the highly advanced fliers that dominate our skies today – the extraordinarily diverse skills of the birds, and the sonar-guided precision of the bats. He encounters some of our planet’s most remarkable fliers – from peregrine falcons dive-bombing starlings over Rome, to hummingbirds hovering in the cloud forests of Ecuador. In a spectacular finale, he visits Gomantong cave in Borneo to witness the mass exodus of a million bats.
Natural World visits the Arizona desert, where a new honey ant queen wages an intense battle for survival as she attempts to build and defend her empire. Eliminating rivals with ruthless efficiency, sacrificing thousands in her quest for domination, murder, cannibalism, genocide - she will do anything to keep her crown. Empire of the Ants is the epic story of one honey ant queen's dramatic rise to power - and her brutal fall from grace.
58m • 2011 • Natural World
For many people Sardinia is THE Mediterranean dream island: picturesque coastlines are a reality here. The breathtaking underwater world is concealed beneath the crystal-clear water surrounding the island. Then on to Abruzzo, the same latitude as Rome, the wild heart of southern Italy.
50m • 2014 • Wild Italy
With the help of some surprising creatures from around the world, this series sets out to discover how animals take to the air, defying the force all airborne animals must conquer, gravity. Part 2: Masters of the Sky This episode looks at powered flight, revealing why peregrine falcons can top 200 miles an hour, how a hummingbird is a slave to its own rather manic lifestyle and that the albatross's secret to flying for free is its nose. Heavyweight beetles break the rules to find love, a devious sparrow-hawk uses agility to execute a lightning-fast raid on his prey and half a million mother bats dominate the sky above, and below, the ground with a dazzling display of aerial prowess.
58m • 2016 • Life in the Air
Our planet was once populated by megafauna, big top-of-the-food-chain predators that played their part in balancing our ecosystems. When those megafauna disappear, the result is a "trophic cascade," where every part of the ecosystem reacts to the loss. How can we stay in balance? George Monbiot suggests rewilding: putting wolves, lions and other predators back on top -- with surprising results.
5m • TED-Ed