Topic: plants

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Why is syrup sticky?

Water isn't sticky, and sugar on its own isn't sticky either. So why is syrup—a heated, melty combination of water and sugar—so very, very sticky? Emily Elert of MinuteEarth explains the sticky molecular structures of...

Why Is The Very Hungry Caterpillar So Dang Hungry?

Monarchs are ravenous for milkweed. California pipevine swallowtail caterpillars want lots of pipevine. Why are these very hungry caterpillars so hungry? “Caterpillars have to store up incredible reserves of prote...

Sandals – Primitive Technology

If you find yourself in the bush (or your back yard) without any footwear and your feet need some primitive protection from the rough terrain, try making your own sandals from scratch. Primitive Technology's anonymous...

Beavers: The Smartest Thing in Fur Pants

Beavers have done more to shape North American landscapes than any animal beside humans. We don’t notice them much today because there aren’t many left, but before colonization, North America was home to hundreds of m...

The Pseudo Fossil Challenge

Pseudo means that something isn't real. A fossil is "the preserved remains or traces of animals, plants, and other organisms from the remote past." A pseudofossil might be mistaken for a fossil, but was actually creat...

Witnessing butterflies emerge at the California Academy of Sciences

Within the California Academy of Sciences' rainforest exhibit, butterflies and moths emerge from their chrysalis and cocoons in a specially designed emergence display. Biologist Tim Wong shows how they set up the clim...

Do Cities Need More Green Roofs?

Green roofs or living roofs are different types of gardens that are created on the tops of buildings to help manage stormwater, improve air quality, help cool city temperatures, insulate the building, create park spac...

Inside Montreal’s Zero Waste Urban Greenhouses

Hydroponics, growing plants without dirt, can be an efficient, technology-driven farming system that can deliver fresher, healthier, and less expensive foods to city customers. In this episode of Stereokroma's Où se t...

How dead is the Great Barrier Reef?

Australia's Great Barrier Reef is the largest coral reef system in the world and the only living structure visible from space. Although ecosystem managers in Australia have worked hard to preserve the reefs, the past ...

Colorscope, an exploration of color across cultures

How do different cultures perceive and use color? Colorscope touches upon those perceptions and uses throughout history in this series of videos from CNN Creative, written and narrated by British art historian and bro...

Barn Owls: The Secret Saviors of Napa Valley’s Vineyards

Barn owls have long been one of the secrets to Napa Valley’s world-class wines. Rather than relying on chemicals and pesticides, winemakers work with owls—nature’s best pest control—to ensure that the best grapes make...

Why are sloths so slow?

Around 35 million years ago, Earth was populated with giant, prehistoric ground sloths like Megalonyx jeffersonii (named after Thomas Jefferson), Paramylodon, and Megatherium who, until around 10,000 years ago, roamed...

Pearl Fryar’s world-renowned topiary garden of rescued plants

In Bishopville, South Carolina, Pearl Fryar is a local gardening legend. When he first moved to the small town in the 1980s, he was almost unable to build his house because neighbors feared that as an African American...

Why 10 Daily Tons of Ant Poop Keep This Rainforest Thriving

High up in the rainforest canopy of Panama's Barro Colorado Island, there are ants everywhere. Azteca ants—one kind of 30 different ant species that might be in a given tree—stand out because of their epic, 9 foot (2....

Hydnora africana, the strangest plant in the world?

With no leaves and no chlorophyll, Southern Africa's Hydnora africana is a underground-dwelling parasitic plant in that gets all of its sugars, minerals, and water by attaching to the roots of Euphorbia plants. It als...

Why the Giant Sequoia Needs Fire to Grow

Giant sequoias, the planet's largest trees and among the oldest living things on Earth—many of the largest are over 3,000 years old—depend on fire to help them reproduce. Learn how a destructive force is necessary for...

How the BBC makes Planet Earth look like a Hollywood movie

In this Vox video from Joss Fong and Dion Lee, we get a look at the technological changes that have influenced how the BBC creates their world-renowned nature documentaries. Compare the groundbreaking access of the ve...

How Does it Grow? Raspberries

Raspberries are delicious and delicate! They grow on brambles, prickly shrubs that grow from roots that can live for 20 years. Their pollinated flowers transform into the fragile fruit, which is actually more than 100...

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