Passionate • 2017 • episode "4/5" • Big Pacific

56:14

Starts in NASA's gravity research aircraft to illustrate the effect of weightlessness. There are surprisingly many plants whose seeds are, in effect, lighter than air.

7/12 • The Living Planet • 1984 • Nature

44:37

Deep in the rainforest of Central Africa lies an elephant oasis - a remarkable place that holds the key to the future for forest elephants. Over the last 20 years, Andrea Turkalo has been studying these enigmatic giants, getting to know over 4,000 intimately. She has begun to unravel the secrets of their complex social lives and the meanings of their unique vocalisations. New acoustic research is shedding light on the many mysteries that still surround forest elephant society. Will these endangered elephants finally speak out and tell Andrea what it is they need to survive?

Natural World • 2010 • Nature

44:33

We flail, we swat, we sweat. We spray, cover up, and hide. But still the tiny, fearsome mosquito penetrates our best defenses. ZAPPED: the buzz about mosquitoes is the story of our ongoing struggle to conquer a little insect that is both delicate and deadly. As the program reveals, this beautiful and versatile blood-sucker has always managed to stay one step ahead of us. As tortured as we are Zapped uncovers, in exquisite detail, how the mosquito goes about its handiwork. It's really only the females that are the problem – they need our blood to incubate their eggs. And, out of more than 3500 species, only 200 or so transmit disease.

S52E08 • The Nature of Things • 2013 • Nature

47:53

The Cave of Swallows in Mexico is a 400m vertical shaft, deep enough to engulf the Empire State Building. The Lechuguilla cave system in the USA is 193km long and 500m deep with astonishing crystal formations hanging from its chambers. Although often overlooked, caves are remarkable habitats with equally bizarre wildlife. Cave angel fish cling to the walls behind cave waterfalls with microscopic hooks on their flattened fins. Cave swiftlets navigate by echo-location and build nests out of saliva. The Texas cave salamander has neither eyes nor pigment. Unique access to a hidden world of stalactites, stalagmites, snotites and troglodytes brings a wealth of surprises.

4/11 • Planet Earth • 2006 • Nature

44:00

For years, researchers have overlooked the naked mole rat, an elusive rodent that lives underground. But now they believe they may help humans live longer, healthier lives. Follow scientists around the globe as they study these remarkable rodents in labs and in their natural habitat, tracking their mating habits, testing their blood, and decoding their genome in an ongoing quest to combat age-related illnesses and even aging itself.

2019 • Nature

58:17

The deep is perhaps the most hostile environment on earth, at least to us - a world of crushing pressure, brutal cold and utter darkness. We have barely begun to explore it, and yet it is the largest living space on the planet. Scientists already think that there is more life in the deep than anywhere else on earth. This episode takes us on an epic journey into the unknown, a realm that feels almost like science fiction. We discover alien worlds, bizarre creatures and extraordinary new behaviours never seen before. We encounter savage hordes of Humboldt squid hunting lanternfish in the depths and coral gardens flourishing in absolute darkness, with more species of coral to be found in the deep than on shallow tropical reefs.. Narrated by David Attenborough,

2/8 • Blue Planet II • 2017 • Nature