Showing results for "The Physical World" in Science

Fennec foxes’ ears can be up to half as long as their bodies. They use them to track movement across the Sahara Desert, including under the sand. In this episode, we follow a fox as he meanders home to his family through the sand dunes as they slowly shift with the wind.

Humpback whales are among the most intelligent animals on Earth. Some scientists believe they might even surpass humans in self-awareness, empathy, and communication skills. In this episode, we swim with a whale as he teams up with other humpbacks to use bubbles to catch fish, rescues a sea lion, and puts his own spin on melodies sung by whales across the Pacific Ocean. This is the world in its natural state, defined by seasons, routines, and cycles. By the time this whale is ready to close one eye and go to sleep, you will be too.

Platypuses are mammals unlike any other on earth. They lay eggs, ooze milk through their skin, and can sense electricity. In this episode, we travel with a platypus as he moves through his nightly routine on the island of Tasmania. He uses electroreceptors to hunt underwater and does a synchronized swimming courtship ritual with his mate, who then digs a burrow 40 feet deep into the riverbank to nest.

Dung beetles might sound dirty, but the ancient Egyptians believed their god took the form of a dung beetle to roll the morning sun across the sky every day. In this episode, we roll with dung beetles around the world as they push their precious dung—often in balls many times larger than they are—over Florida pastures, Armenian highlands, and the vast South African savanna.

Sloths are the slowest mammals on earth. They can hardly see. They live in rainforests among jaguars, pumas, and countless other predators. Yet they survive. And they do it by being so incredibly slow, and living a life covered in algae. In this episode, we hang with a sloth in the jungle of Costa Rica as he spends a month digesting one single leaf, and we see the symbiosis and collaboration that surrounds him.

Dogs are a familiar and comforting part of many of our lives. In this episode, we take a walk with a pet xoloitzcuintli, or Mexican hairless dog, as he greets his blocks by smell. Along the way, we learn the backstory of squirrels in U.S. cities and observe the very smart and clean neighborhood raccoon.

Crows have long been the subject of folklore, likely because they’re strikingly similar to humans, leading lives rich in personality, intelligence, and relationships. In this episode, we fly the streets of Seattle with a crow as she grooms her mate, delivers what appears to be a gift, and finally commutes miles away from her territory to gather and chat with thousands of other crows before it’s time to roost for the night.

Elephants are the largest land animals in the world. They are also intensely social and have advanced long-term memories. In this episode, a parade of Asian elephants makes its way through the Sri Lankan forest to a lake for drinks and mud baths, stopping periodically for group naps. The female leading the parade uses infrasonic rumbles—inaudible to humans, but traveling as far as two miles along the surface of the Earth as seismic waves—to invite friends and family around the forest to join her at the reservoir.

Himalaya is one of the world's most extraordinary geophysical, historical, environmental and social regions. Historian John Keay introduces us to the myriad mysteries of this vast, confounding and utterly fascinating corner of the planet, and makes the case that it is one of our most essential—and endangered—wonders. For centuries, Himalaya has captivated an illustrious succession of admirers, from explorers, surveyors and sportsmen, to botanists and zoologists, ethnologists and geologists, missionaries and mountaineers.

Brown bears lead deeply cyclical lives. They need to gain sometimes hundreds of pounds during the warmer months to prepare for winter hibernation, a lifestyle that brings them into frequent contact with many other species’ cycles. In this episode, we meander through the Alaska peninsula with a bear and her cubs as she teaches them to hunt salmon at the falls, dig for clams along the coastal mudflats, and use the regional rubbing tree.

The sun sinks over the Rio Grande, the mountains around it glow orange, and the world slows down. The Mexican free-tailed bats inside the Jornada Cave are just starting to stretch and murmur. In this episode, we visit the nursery where all the baby bats stay together, and we accompany a new mother as she journeys into the sky with the rest of her crew for a night of hunting bugs via echolocation.

It can come in waves - like tidal waves. It changes societies. It disrupts life. It ends lives. As far back as 3000 B.C.E. (the Bronze Age), plagues have stricken mankind. COVID-19 is just the latest example, but history shows that life continues. It shows that knowledge and social cooperation can save lives. Viruses are neither alive nor dead and are the closest thing we have to zombies. Their only known function is to replicate themselves, which can have devastating consequences on their hosts.

The fundamental outlines of the physical world, from its tiniest particles to massive galaxy clusters, have been apparent for decades. Does this mean physicists are about to tie it all up into a neat package? Not at all. Just when you think you’re figuring it out, the universe begins to look its strangest, and this book illustrates how answers often lead to more questions and open up new paths to insight.

Learn more about the Earth and our environment, both physical and social, to help develop your fantasy setting.

Organized in keeping with our knowledge of the migration of human groups through history, with statistics and a cultural portrait of each ethnic group, People of the World becomes a fascinating round-the-world tour of customs and traditions, as well as a go-to source for background information to round out one's own family history. From the Tuvans of Siberia to the Samoans and Tahitians of Polynesia, from the Mapuche of Chile to the Sami of Scandinavia, 222 of the world's 10,000-plus ethnic groups are featured.

In the tradition of Jared Diamond and Jacques Barzun, prize-winning historian Anthony Pagden presents a sweeping history of the long struggle between East and West, from the Greeks to the present day.

The relationship between East and West has always been one of turmoil. In this historical tour de force, a renowned historian leads us from the world of classical antiquity, through the Dark Ages, to the Crusades, Europe's resurgence, and the dominance of the Ottoman Empire, which almost shattered Europe entirely. Pagden travels from Napoleon in Egypt to Europe's carving up of the finally moribund Ottomans - creating the modern Middle East along the way - and on to the present struggles in Iraq.

今、世界は新型コロナによって、グローバル・ボーダーレス化からローカル・ボーダー化に逆戻りしている。そんな変化の激しい現代社会を読み解くための強力なツール(教養)が「歴史」と「地理」。

This is the true story of a Harvard graduate who forsook his studies for two years of the grueling life of an ordinary seaman. This exciting tale was the first to realistically describe the lives of the roughly treated, poorly paid sailors of the merchant marine.

In 1918, a world war raged, and a lethal strain of influenza circled the globe. In the midst of all this death, a bizarre disease appeared in Europe. Eventually known as encephalitis lethargica, or sleeping sickness, it spread worldwide, leaving millions dead or locked in institutions. Then, in 1927, it disappeared as suddenly as it had arrived. Asleep, set in 1920s and '30s New York, follows a group of neurologists through hospitals and asylums as they try to solve this epidemic and treat its victims - who learned the worst fate was not dying of it, but surviving it.