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A Veritasium video on the asteroid threat, with UCLA's Dave Jewitt explaining detection efforts and how different asteroid sizes compare in damage.

Scott Manley's short animation shows every asteroid discovery from 1970 to 2015 plotted over time in 8K. It makes visible how survey technology made discoveries accelerate and where telescopes looked.

A Discovery Channel computer simulation of a large asteroid impact on Earth, showing the scale of the devastation. It sits in a broader context of early Earth impacts and the moon-forming collision.

John Oliver explains how plastics harm the planet and why recycling is not the solution consumers have been led to believe. He argues corporations and policymakers must act, not just individuals.

A Last Week Tonight segment in which John Oliver explains the US nuclear waste storage problem, including the Yucca Mountain politics. It argues the country needs a safe place to store waste.

John Oliver's Last Week Tonight segment on food waste covers how producers, sellers and consumers throw away huge amounts of food, including sell-by dates and donation myths.

A John Oliver Last Week Tonight segment on America's crumbling infrastructure and why maintenance is neglected and underfunded. It mixes comedy with real examples such as aging bridges and dams.

Dr. Jason Fung, a nephrologist, explains therapeutic fasting as a treatment for obesity and type 2 diabetes. He frames it around the two-compartment problem of fat storage and insulin resistance.

Cardiologist Dr. Pradip Jamnadas lectures on the rationale for dietary restriction and fasting, covering insulin resistance, glucose intolerance, and low-carb eating over about 81 minutes.

A short explainer on the physiological differences between fasting and simply eating less. It covers ketosis, ghrelin and hunger waves, and the hormonal effects of fasting.

Climate Town gives a comedic, fast-paced account of how the plastics industry promoted recycling, including the resin-code recycling symbol, while knowing most plastic could not be economically recycled. It points viewers to the Frontline documentary Plastic Wars for a deeper treatment.

Rhonda Patrick interviews USC gerontologist Valter Longo about fasting, the fasting-mimicking diet, and their effects on longevity, cancer, and multiple sclerosis. They discuss mechanisms such as IGF-1 and autophagy and clinical trials.

Investigative journalist Sharyl Attkisson explains how astroturf, fake grassroots campaigns funded by corporate or political interests, manipulates media messages. The TEDx talk is about 11 minutes.

Dr. Jason Fung's talk at the 2018 CrossFit Health Conference on therapeutic fasting for weight loss. He explains why long-term weight loss is hard and tackles common myths.

Kyle Hill explains what nuclear waste actually is and how it is stored, arguing that the problem was effectively solved decades ago. It covers solid shielded waste and deep geological storage.

Sandy Munro and Cory discuss how Tesla Model 3 and Model Y bodies in white have evolved over five years, including giga castings and lean design.

Asianometry examines how East Germany tried and failed to build a native semiconductor industry despite heavy investment, including the espionage involved in acquiring Western microelectronics technology.

A FRONTLINE documentary on whether efforts to fix plastic pollution made it worse. It looks at the battle over plastics and recycling and how little plastic is actually recycled.

Cleo Abram's explainer on whether nuclear waste is really the intractable problem it is portrayed as, looking at how spent fuel can be recycled and used. It features a collaboration with Johnny Harris.

A 54-minute video by a former MrBeast worker alleging that MrBeast's operation is fraudulent, including claims that some contests are staged or manipulated.

An Onion News Network satirical segment about a memorial dedicated to the future victims of a dam that officials know will fail. It is a dark joke about known infrastructure risk and inaction.

John Oliver's Last Week Tonight segment on patents and patent trolls, explaining how stockpiled patents and lawsuit threats burden businesses. It features the East Texas venue of Marshall.

A New Yorker short documentary about the 2014 sinking of the Sewol ferry in South Korea, based on the film In the Absence. It examines the failures in the rescue and the political aftermath.

A FoundMyFitness episode on how microplastics and associated chemicals such as BPA and PFAS accumulate in the body, including the brain and reproductive systems. It also discusses ways to reduce exposure.

Lex Fridman interviews Harvard astrophysicist Avi Loeb about the interstellar object Oumuamua, aliens and black holes. Loeb lays out his argument that it may be an artifact rather than debris.

Sabine Hossenfelder explains why she thinks faster-than-light travel may not be ruled out. She argues that the standard objections from special relativity are inconclusive.

Brady Haran interviews Brother Guy Consolmagno, director of the Vatican Observatory, for Sixty Symbols. It is part of a three-video set along with the observatory's telescopes and its meteorite collection.

John Oliver's Last Week Tonight segment on the Chinese government's treatment of the Uighur people, covering the human rights abuses in Xinjiang and why they deserve attention.

John Oliver's Last Week Tonight segment on the Sackler family and how they have handled opioid lawsuits. It covers how hard they fought to defend their name and is the third of three segments on the opioid crisis.

John Oliver's Last Week Tonight segment on vaccines, arguing that the benefits far outweigh the minuscule risks and discussing why some parents still doubt their safety.

A Last Week Tonight segment on the US Postal Service's financial troubles. John Oliver explains why it matters, what pushed it to this point, and what viewers can do.

John Oliver's Last Week Tonight segment covers the working conditions of US air traffic controllers and the understaffing, outdated equipment (including floppy disks) and funding structure of the FAA. It mixes comedy with policy criticism.

John Oliver's Last Week Tonight segment examines prediction markets such as Polymarket: the legal and moral questions, weak regulation, and insider trading and manipulation concerns.

John Oliver's Last Week Tonight segment on coal examines the industry, its executives and its treatment of miners, and includes the coverage of Robert Murray that led to a lawsuit.

John Oliver's Last Week Tonight segment on the state of the US power grid, why it needs fixing, and the risks of aging infrastructure.

John Oliver's Last Week Tonight segment on US voting machines, covering how they work, their security weaknesses, and how elections could be made more secure.

A Last Week Tonight segment on union busting that explains the tactics employers use and why they face few consequences. It is delivered as comedic commentary.

In a 2010 Google Tech Talk, Kirk Sorensen gives an economic analysis of what spent nuclear fuel actually contains. He argues it is mostly valuable material that can be partitioned and reused, not just waste to be isolated for 100,000 years.

Five hours of the late-night BBC Radio 4 Shipping Forecast, uploaded to mark its 150th anniversary. It can be used as sleep audio or to learn the sea areas named in the broadcast.

A two-minute clip from the documentary The Fog of War in which Robert McNamara recalls Fidel Castro explaining how close the world came to nuclear war during the Cuban Missile Crisis.