When Does Life Begin? • episode "S4E02" • Through the Wormhole

4:00

Humans, octopi and pine trees alike are all made up of cells, tiny but sophisticated systems that keep life going. Cells are almost like tiny factories run by robots, with the nucleus, DNA, proteins, lipids, and vitamins and minerals all playing critical roles. George Zaidan and Charles Morton lay out the blueprint of a cell and explain how biochemistry binds all life together.

TED-Ed • Nature

43:58

For many living creatures, including humans, eyes are an integral survival tool. Learn how eyes have also inspired incredible emerging technology.

S8E6 • Explorer • 2016 • Nature

46:23

During the dry season in Northern Botswana, over 45,000 elephants--more than 10% of the world's population--congregate along the banks of the Chobe River. Join local wildlife on a quest to escape the punishing drought.

S1E6 • Waterworld Africa • 2017 • Nature

49:00

In Tokyo, there are unapproachable "lost islands" with unspoiled environs and rich wildlife. Minami Iwo-to, part of the Ogasawara island chain, is about 1,300km from the Japanese capital. Normally, entry is banned to protect the environment. An exception was made in 2017 for the first comprehensive scientific survey in 10 years. The island compresses multiple climate zones into a small area, offering researchers a rare opportunity to view evolution in action. Braving an arduous climb and a swarm of seabirds, the team discovers one new species after another.

2019 • Nature

58:32

In this episode, Chris Packham tells the almost implausible story of how our world went from a barren rock with a sky of endless black, to the planet we know today, cloaked in the thin blue line of our life-sustaining atmosphere. When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was - like so many other lifeless worlds in the universe - devoid of an atmosphere, an inhospitable rock floating in the black void of space. But as the young planet was pummelled by asteroids a period of extraordinary upheaval began. Over a two-billion-year period, the planet faced violent eruptions and a toxic orange haze, vast oceans of water in the sky and seas turning rusty red. Eventually, with the emergence of life and photosynthesis recalibrating the gases in our atmosphere, the stage was set for Earth to become the vibrant azure-skied planet we call home today.

S1E4 • Earth: One Planet, Many Lives • 2023 • Nature

59:09

Today Earth is a human world, home to eight billion people and counting. Humans now have a greater effect in shaping Earth’s surface than many natural processes. In this episode, Chris Packham explores how dramatic twists in Earth’s story enabled humans to go from being part of nature to controlling it, and what we can learn from this epic tale before it’s too late. The story begins 66 million years ago with the catastrophic impact of the asteroid that wiped out the (Non-avian) dinosaurs. From the ashes of the desolation that followed, a new animal family rose to power. This was adaptable and inventive enough to emerge out of the harsh new world – the mammals. It began with a distant ancestor that shared many traits of the much maligned, but evolutionarily brilliant, rat. Due to a series of extreme geological and climatic events, mammals evolved into early primates feasting in the newly formed tropical rainforests, and then to early humans travelling vast distances between forests in places like East Africa’s Rift Valley. Earth’s story is a saga spanning 4.5 billion years, but it’s only in the last 11,000 years - with the rise of farming - that our species has started to dramatically impact our planet and its ecosystems. The human chapter of Earth’s story might end in disaster, but Chris is keen to argue for a different ending, where all of humanity’s achievements to date “…were just our dress rehearsals, because in the very near future our species will need to reach the zenith of its achievements and… all humanity will have to learn to put our Earth first.”

S1E5 • Earth: One Planet, Many Lives • 2023 • Nature