Topic: safety

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Flying drones over the lava lake at Ambrym’s Marum Crater

...for science! Made possible thanks to camera-outfitted drones, filmmaker Sam Cossman took a team the edge of Ambrym Volcano's Marum Crater to 3D map its 7.5-mile-wide (12-kilometer) caldera and the spectacular lava ...

ExpeRimental: Candle Chemistry

In this episode of ExpeRimental, Lisa and Josh explain the unseen as they make a flame jump through the air. Josh also measures how long it takes for covered candles to extinguish on their own. There's more activity i...

Train tracks: How to replace railway ties without pulling up the rails

Railroad tracks are made of three main parts: the long steel rails that the trains run on, wooden or concrete railroad ties (US) or sleepers (UK), and the track ballast that helps bear a train's weight and keeps the t...

Watch 11-year-old rock climbing prodigy Brooke Raboutou climb

It's no wonder that 11-year-old Brooke Raboutou loves to rock climb: Her parents are two former world champion climbers who own a rock climbing gym in Boulder, Colorado, and from very young, climbing has been a huge p...

Grizzly Bears vs Campsite

When camping, it’s good to know how to enjoy nature while keeping nature protected and out of your stuff. With this in mind, grizzly bears Ozzy and Bruno team up with ZooMontana keeper Kry...

Firefighter Xochitl Hernandez – Amy Poehler’s Smart Girls

From Amy Poehler’s Smart Girls YouTube series: meet firefighter Xochitl Hernandez, one of 57 female firefighters in Austin Fire Department. Hernandez explains why she loves her job, and shares some of the amazin...

Human tower-building competition: 2012 Concurs de Castells

From the 2012 Concurs de Castells, a human tower-building competition in Tarragona, Spain, watch this video by photographer David Oliete. David also took photos. A long tradition in the ...

Animated Knots: How to tie a Figure 8 knot

This video demonstrates how to tie a Figure 8 knot, one of the Basic 8 knots that lead to a huge catalog of useful tying skills for boating, climbing, scouting, search and rescue, and more. ...

Shelter in 24hrs: Emergency Concrete-laced Canvas Tent

From National Geographic’s I Didn’t Know That, this flexible, concrete-laced canvas can be put up by two people and ready to use as shelter within 24 hours. It’s essentiall...

Inventor Portrait: Jerry Ford’s automatic wheelchair brake device

Elderly people with Alzheimer’s Disease or dementia sometimes forget to use the manual brakes on their wheelchairs, which then fall out from under them when they try to stand or sit. When this ...

Bubble Planets: How to make bubbles filled with dry ice vapor

Bubbles + Dry Ice (the solid form of carbon dioxide) come together in this step by step video for “creating planets.” It’s also a great DIY parent-kid project for learning about physics, gasses, surf...

Helmet-mounted camera: A firefighter enters a home on fire

A firefighter and team head into a two-story home to put out a fire, all recorded with a helmet-mounted camera. Harrowing! But a great example of teamwork, using safety gear, caution and courage, training, as well ...