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0:05: We are approaching a redwood tree. To animate a scientifically accurate leaf, artists studied the texture of a redwood leaf specimen on a glass slide at high resolution. They even counted the stomata, and used that exact count for this film!

0:25: These leaves would be measured on a centimeter scale. Throughout the animation, we will gradually zoom in to smaller scales.

0:40: As we approach a single stoma, we are now on a millimeter scale.

0:48: As we enter the interior of the leaf, we see many individual palisade cells. These cells are where photosynthesis takes place; they are translucent to allow sunlight to enter.

1:00: As we approach a single palisade cell, we’ll zoom down to the micrometer scale. The shapes inside the cell are organelles: the bright globules at the bottom are the Golgi apparatus; the yellow spotted tubes are endoplasmic reticulum studded with ribosomes.

1:09: That large, blue membrane surrounds the nucleus; the purple blobs are mitochondria.

1:18: The faint, yellow, spider-web structure of the cytoskeleton provides structure and support to the cell.

1:24: You are about to enter a chloroplast; inside you see flat, pancake-like membranous structures called thylakoids. This is where the light-dependent reactions of photosynthesis take place to produce ATP, the cell’s energy carrier molecule. way


1:38: The time scale has changed: the molecules are shown moving 1 million times slower than in real life!

1:42: As we near an individual thylakoid, the animation scale continues to shrink down to the molecular level, where things are measured in nanometers.


1:52: The green and blue bush-like structures are photosystems: clusters of proteins that absorb light energy from the sun and help convert it into the chemical energy that’s stored in the bonds of the energy carrier molecule called ATP.

2:03: The yellow-green, rotating structure is an enzyme called ATP synthase. This molecular machine facilitates the flow of protons down their concentration gradient from one side of the thylakoid membrane to the other, using the energy released in the process to assemble ATP.

2:16: The pulses of light in the thylakoid membrane in which the photosystems are embedded represent energized electrons being passed from one photosystem to another, passing along the energy which will be stored in the bonds of ATP (the classic “bucket brigade”).

2:26: The small “wigglies” are ATP molecules. Living things store energy in the bonds of the ATP molecules and then use that energy to conduct all the processes of life.

This animation is a model, and has its strengths and limitations. In order to model something well, visual artists have to make decisions about what to represent and how best to do so. What’s present in this model, and what’s intentionally missing or altered? Find out by visiting https://www.calacademy.org/edu....cators/travel-deep-i
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The California Academy of Sciences is a renowned scientific and educational institution dedicated to exploring, explaining, and sustaining life on Earth. Based in San Francisco’s Golden Gate Park, it's the only place in the world to house an aquarium, planetarium, rainforest, and natural history museum—plus cutting-edge research programs—all under one living roof.

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A lone praying mantis picks off a few ants before the colony calls for backup.
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Superswarm (2009)
When animals swarm they create a super-organism of incredible power. They can attack our food supplies, immobilise our transport systems, undermine our cities and even attack our energy supplies. They can stop us in our tracks. Using state-of-the-art photography, Superswarms reveals the collective intelligence behind the animal invasions, and how man fights back.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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⁣When the Soviet Union collapsed in 1990, Cuba's economy went into a tailspin. With imports of oil cut by more than half – and food by 80 percent – people were desperate. This film tells of the hardships and struggles as well as the community and creativity of the Cuban people during this difficult time. Cubans share how they transitioned from a highly mechanized, industrial agricultural system to one using organic methods of farming and local, urban gardens. It is an unusual look into the Cuban culture during this economic crisis, which they call "The Special Period." The film opens with a short history of Peak Oil, a term for the time in our history when world oil production will reach its all-time peak and begin to decline forever. Cuba, the only country that has faced such a crisis – the massive reduction of fossil fuels – is an example of options and hope.


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⁣Borehole Drilling in Ghana | 2020

Clean water and sanitation for all by 2030.
How can a Self-supply chain of Simple Market based Affordable Repairable Technologies (SMART) help reaching this goal?

Presented at WEDC 2017.

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What do trees talk about? In the Douglas fir forests of Canada, see how trees “talk” to each other by forming underground symbiotic relationships—called mycorrhizae—with fungi to relay stress signals and share resources with one another.
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Read ‘Talking Trees’ in the June 2018 issue of National Geographic magazine to learn more about the Douglas fir forests of Canada and the work of forest ecologist Suzanne Simard.

How Trees Secretly Talk to Each Other in the Forest | Decoder
https://youtu.be/7kHZ0a_6TxY

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ORFC Global 2021 Session

Communities globally are facing unprecedented strain from climate collapse, soil degradation and commercial pressures. However, a return to older varieties of crops vital to the health and wellbeing of growers and their communities has presented a promising and enriching path forward. Drawing from grassroots experiences around the world from farmers in South Africa, China, and Wales this session explores the opportunities our heritage grains present to us to reconnect with more resilient, diverse crops and vibrant traditions through a discussion of millet, rice, and oats and the people who grow them. Although climates, conditions, and situations may differ, the growers offer universal advice on reviving connections to these life-giving grains and aim to inspire similar action in other communities.

Speakers:
Method Gundidza
Gerald Miles
Zhengxi Yang

Chair:
Sinéad Fortune

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Africa is a continent where borders can get pretty complicated. The main reason for this is the colonial era where European nations divided the continent into spheres of influence by literally drawing the national borders as guided by their interests leaving some countries with peculiar national borders.

That’s why you will find some countries with clearly defined shapes while others not so much. Today we zoom in on some of Africa’s most egregious examples of border weirdness.

⁣Namibia Disapproves Israel's AU Observer Status | 29 July 2021