Nearly 40 million people are living with HIV. After decades of research and activism, how far have we come in finding a cure and battling the stigma?
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Fifteen international agencies spend $62 billion every year on space travel. What's fueling our costly - and dangerous - drive to explore the universe?
2020 • Astronomy
In the 21st century, China has become a global economic powerhouse. Why was the rest of the world so slow to notice its rise to the top?
2020 • Economics
Plastics have transformed how we live, but progress comes at a high price: 7.8 billion tons of waste. Are plastics a miracle or a catastrophe?
2000 • Environment
Oil has brought great wealth to the Middle East and ignited major wars. Is it a blessing or a curse for the region, as well as the rest of the world?
2020 • Economics
We share the planet with an estimated 9 million robots, from self-driving cars to surgical arms. Could they one day completely replace humans?
2020 • Technology
Over 10% of the world's electricity comes from nuclear power. But with radioactive waste and the threat of nuclear meltdown, are we playing with fire?
2020 • Economics
Today, GPS is guiding - and following - pretty much anything that moves, all around the world. It's so accurate it can track you down to the head of a pin. But where is GPS leading us? Is it helping us find the way, or lose it?
2022 • Technology
MP3s transformed how we listen to music - and spawned digital piracy. Streaming helped the industry recover, but how can artists get their fair share?
2022 • Technology
Credit cards changed the global economy and attitudes about personal spending, but record levels of consumer debt beg the question: Just who's in charge?
2022 • Technology
Growing evidence suggests that psychedelic drugs could treat brain injuries and psychological problems. But can we get past their controversial history?
2022 • Brain
Bottled water is a big business, selling itself as a tastier and healthier alternative to the tap variety. Is there truth behind the claims?
2022 • Economics
Thanks to dating apps, finding love is easier than ever. But are we now so focused on playing the game that we're missing out on real connection?
2022 • Technology
The home fitness revolution has exploded into a multibillion-dollar industry. Are home workouts a healthy habit - or just hype?
2022 • Health
Sweet deal or bitter pill? High fructose corn syrup rose up to dominate supermarket shelves, but what is it doing to our health?
2022 • Health
When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation.
2014 • Health
The epic story of how people around the world lived through the first year of the coronavirus pandemic
1 • The Virus That Shocked the World PBS FRONTLINE • 2021 • Health
The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work? Kelwalin Dhanasarnsombut details the science behind vaccines.
Through the worlds of a religious faster, an ultra-marathon runner, a farmer and a young girl beating allergies, go deep into the world of the human gut, which processes the fuel our bodies need to keep going.
S1E3 • Human: The World Within • 2021 • Health
Stephen Nolan travels to the USA, the world leader in scientific research, to learn about the inner workings of the brain and the impact that the junk food we eat everyday has on it.
2015 • Health
If you’ve been to a children’s birthday party lately, chances are at least one of the little guests had a portable needle loaded with epinephrine. Its standard equipment for a growing generation of highly allergic kids: more than three times as many children have food allergies now than twenty years ago. And one out of every three children is now allergic to foods, animals, or plants. Something puzzling, and frightening, is going on with our immune systems. The Allergy Fix travels across Canada and to the US, the UK and Germany to investigate why allergies are on the rise – and what’s being done about it.
S53E14 • The Nature of Things • 2014 • Health