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Protein Degradation through Ubiquitination – Oxford University Press (2014)

September 26, 2019 at 2:08 pm / Molecular Nature, Video

What happens when a protein is “done” and must be taken care of? The companion animation to the Oxford University Press text book Molecular Biology- Principles of Genome Function, encapsulates the basics of ubiquitination through E1>E2>E3 cascade and the molecular components involved. Ubiquitin is a small protein that can be covalently linked to lysine residues of proteins targeted for degradation by proteosomes inside the cell. E1 activating enzyme E2 conjugating enzyme E3 ligase complex The combinatorial diversity of E3 complexes […]

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MOSAiC Expedition: An Arctic Odyssey of Climate Scientists

September 25, 2019 at 5:14 pm / Global Patterns, Video

Since Captain Cook’s time (the collier bark Endeavor was the first scientific research vessel in history) ship expeditions have been extremely influential to understand our world. In an age of anthropogenic climate change the Arctic has remained the most understudied component of the global circulation system. Human induced global warming is exerting its effects on both poles of the planet. Now the time has come and the international Arctic drift expedition known as MOSAiC Expedition (Multidisciplinary drifting Observatory for the […]

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When Plants Fight Back – bioGraphic (2017)

September 25, 2019 at 12:50 pm / Ecological Documentaries, Evolution, Natural history, Video, Wildlife Documentaries

Even Aristotle got it wrong. He thought plant roots convert soil into wood and grow that way. Plants resemble bizarre upside down animals. Their superior mouth parts (roots) are located in an inferior position. According to Aristotle, plants are ‘lower’ level living things. They are the first basic steps in procession of life from the inanimate to the animate (animals). Plants don’t move and are without ‘sensory soul’ but still have ‘souls’. Plants do not have any excrement, do not […]

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Weekly Changes in Arctic Sea Ice Age During 1984 – 2019 | NASA/SVS (2019)

September 24, 2019 at 10:02 pm / Global Patterns, Video

NASA’s Scientific Visualization Studio (SVS) has produced an animation showing the sea ice dynamics in the Arctic. The diminishing ratio of multi-year sea ice is staggering. Human contribution to global warming is well documented. The response of the polar regions to heating especially in the Arctic is extremely fast. While scientists are rushing to predict future temperature and precipitation using exceedingly complex climate models, the behavior of the cryosphere is a curious one. We are already witnessing rather large glacial […]

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Bluefish – Prince of The Bosphorus

September 23, 2019 at 2:10 pm / Natural history, Video, Wildlife Documentaries

You can now watch the documentary with English subtitles by entering the following code “yavrubalıkyemeyizbiz”. LÜFER (Bluefish) is a glitter in people’s eyes, big time money for the small & big fisherman. When the seasonal migration starts lüfer fishing becomes an addictive daily routine for the retired, unemployed and off time employer/hobbyists across Bosporus. If you have a chance to travel around Istanbul’s coastline on a day in October, you can count close to ten thousand active fishing rods, day […]

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Whack! Jab! Crack! It’s a Blackback Land Crab Smackdown – Deep Look – PBS/KQED (2019)

August 23, 2019 at 9:50 pm / Natural history, PBS Nature, Short Observations, Video

DEEP LOOK is an award-winning PBS program produced by KQED. Here’s another cool story from season 5 Episode 13. Shred a sponge into thousands of pieces but the cells can still rearrange and organize themselves in a surprisingly rapid manner. Here we are shown a snapshot of another example of limb regeneration from the crustacean blackback land crab (Gecarcinus ruricola) native to the Caribbean. Human tissue and organ regeneration is a curious goal for medicine. However in order to achieve […]

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Perpetual Ocean from NASA

July 27, 2019 at 1:49 pm / Global Patterns, NatureDocumentaries.org, Video

Understanding large-scale global climate and local weather patterns is life saving. Majority of our planet is covered by oceans therefore understanding ocean dynamics is key for making climatic forecasts. Here you can watch four interrelated animations produced by NASA’s Scientific Visualization Studio in a single video. All animations are based on simulations of high resolution satellite data on an impressively realistic General Circulation Model (GCMs) that NASA uses called ECCO2 (Estimating the Circulation and Climate of the Ocean Phase II). […]

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Annotated Features of Moon Surface – Kaguya/JAXA

July 23, 2019 at 11:32 am / Cosmological, Video

Some astrobiologists consider that having a satellite as big as The Moon could be one of the prerequisites of life on a planet. Satellites with sufficient mass can exert a stabilizing effect on the rotation axis of its planet preventing erratic wobbles like a top loosing its speed. In fact, our Earth experiences such wobbles known as the Milankovich Cycles but thanks to our moon the effects are dampened. 2019 marked the 50th anniversary of the Apollo 11 Moon landing […]

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Wallace in Borneo – Bill Bailey’s Jungle Hero – BBC (2013)

June 27, 2019 at 2:35 pm / BBC documentaries, Evolution, Natural history, Video

The theory of evolution was co-discovered independently by two biologists that lived within the same time period. Darwin and Wallace were well known in their time but Wallace’s name gradually has been overshadowed by Darwin. Today we rarely (almost never) hear the name Alfred Russell Wallace. In the past there have been a few documentaries making a rare attempt to focus on the biography of this very influential biologist including an episode in Jacob Bronowski’s 1973 The Ascent of Man […]

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An Interactive Exhibit – “The Legacy of a Lifetime of Collecting: The Carl & Marian Rettenmeyer Story”

May 4, 2019 at 10:53 am / Natural history, Video

The interactive exhibit “The Legacy of a Lifetime of Collecting: The Carl & Marian Rettenmeyer Story,” was inspired by a fascinating collection of army ants and their hundreds of closely associated organisms, or “guests.” The specimens collected over the course of 50 years of fieldwork in South and Central America by the late Carl and Marian Rettenmeyer. Filmed entirely on location at La Selva Biological Field Station in Costa Rica Rettenmeyers produced a two part documentary series on this ecologically […]

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Climate Change – The Facts / David Attenborough – BBC (2019)

April 23, 2019 at 8:46 pm / BBC documentaries, Global Patterns, Human Nature, Video

This documentary has a very urgent message (so urgent that I don’t even have time to write up an accompanying text about it!). It is a call to arms. Climate change from global warming due to Human activities is now a well-established fact. Global atmospheric carbon dioxide level is now more than 410 ppm. In fact, you can check the most up to date atmospheric CO2 reading from Hawaii yourself. We have less than a decade to curb our emissions […]

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A Diverse Tropical Forest Canopy and Crown Shyness – Dimitar Karanikolov (2019)

April 22, 2019 at 7:21 am / Ecological Documentaries, Natural history, Video

This is a wonderfully poetic and at the same time quite informative piece of short observation captured by the photographer Dimitar Karanikolov. The video successfully demonstrates a botanical phenomenon known as “crown shyness” by providing a nicely stabilized vertical view of canopy trees swaying by the wind in Tulum Mexico. Tree canopies are some of the most diverse sections in tropical forest. The exact mechanism of crown shyness is still not resolved but there are quite a few convincing hypotheses. […]

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How Enzymes Work? – PDB/RCSB

April 20, 2019 at 3:55 pm / Molecular Nature, Video

Enzymes are a catalytic subgroup of proteins formed as end products of the Central Dogma of biology. They are essential for cellular functioning. Here in this Protein Data Bank (PDB) video the enzymes constituting the hugely important metabolic pathway –the citric acid cycle– that connects carbohydrate, fat and protein metabolism are briefly visualized. Subsequently, the enzyme aconitase (aconitate hydratase; EC 4.2.1.3) in this hugely important metabolic pathway is highlighted as an example. The steps taking place in the active site […]

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What is a Protein? – Protein Data Bank/RCSB

April 19, 2019 at 3:17 pm / Molecular Nature, Video

Proteins are end products of the Central Dogma of biology. They are essential for cellular structure and function. Proteins have dizzyingly diverse structures. Since the invention of X-ray chrystallography by the Australian physicist William Lawrence Bragg structures of many complex molecules have been resolved including proteins. Solved structures of proteins are deposited in the Protein Data Bank (PDB), a free and curated structural data resource for thousands of biological molecules. These structures are stored in the form of Cartesian coordinates […]

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Hurricane-induced Selection on the Morphology of an Island Lizard – Nature (2018)

April 10, 2019 at 4:15 pm / Ecological Documentaries, Evolution, Video

Hurricanes are catastrophically destructive and can have long-lasting effects on ecological systems. For instance, the Atlantic hurricane season of 2005 was a particularly strong one with record breaking 27 named storms. Mass mortality observed after hurricanes may be a force of natural selection. The hypothesis that destructive events such as hurricanes could drive natural selection has been controversial. In order to test this, scientists surveyed a common, small-bodied lizard (Anolis scriptus) that lives throughout the Turks and Caicos archipelago before […]

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