Henry meets a Rose in a florist shop. Henry learns about, Valentine's day. all the different types of flowers and what a florist does. It's Valentine's day, the busiest day of the year for flowers! Unfortunately the Florist has gotten...

This video is an algebra 1 lesson on factoring a polynomial in the form x squared plus bx plus c. The teacher explains how to factor polynomials, using the algebraic variables p and q, and how to identify special characteristics of...

Viruses and spyware are the two major forms of mobile malware, and this video explains what viruses and spyware are and how to protect your mobile device from them.
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This clip is from the chapter "Mobile Threats and...

👉Learn the basics of factoring quadratics by using different techniques. Some of the techniques used in factoring quadratics include: when the coefficient of the squared term is not 1. In that case, we first write the quadratic in...

Businesses need to stop cutting labor costs and start investing in people, says social impact investor Warren Valdmanis. In this perspective-shifting talk, he breaks down the essential ingredients of a "good" job -- which is more than...

Jessi and Squeaks love getting interesting science questions from their friends! Join them as they check their email and answer questions from kids like you!

Could it be wrong to help children in need by starting an orphanage? In this eye-opening talk about the bad consequences of good intentions, Tara Winkler speaks out against the spread of orphanages in developing countries, caused in part...

From "got milk?" to "avocados from Mexico," marketing influences what you eat more than you may realize. But despite the known power of food marketing, farmers in Africa are more likely to receive funding for seed and fertilizer than...

How often does technology interrupt us from what we really mean to be doing? At work and at play, we spend a startling amount of time distracted by pings and pop-ups -- instead of helping us spend our time well, it often feels like our...

Why doesn't the government just get out of the way and let the private sector -- the "real revolutionaries" -- innovate? It's rhetoric you hear everywhere, and Mariana Mazzucato wants to dispel it. In an energetic talk, she shows how the...

The actual path of a raindrop as it goes down the valley is unpredictable, but the general direction is inevitable, says digital visionary Kevin Kelly -- and technology is much the same, driven by patterns that are surprising but...

It’s pretty well known that Australia is home to some strange animals, but echidnas are especially weird evolutionary misfits.

Since the 1950s, governments, companies, and researchers have been planting flags among the stars. But while it might seem like there's plenty of room in space, some pieces of celestial real estate are more valuable than others. As far...

All the complexity in the universe ultimately owes its existence to one of the simplest materials possible: molecular hydrogen. And not only did this molecule play a huge role in building the universe as we know it, today, it also helps...

Ever think you'd hear Sandra Bullock, Britney Spears and Dolly Parton in one TED Talk? Here they are, courtesy of "Saturday Night Live" star Melissa Villaseñor. She shares the life lessons of a comedian -- complete with celebrity...

SciShow Space gives you the latest in Space News, including fascinating facts about the latest visitors to the ISS, how to spot the Eta Aquarids meteor shower, and a new discovery in our own celestial neighborhood.

Astronomers are trying to answer the question of how Pluto formed, and we have more evidence for the existence of Planet Nine!

Beware: Rives has a contagious obsession with 4 a.m. At TED2007, the poet shared what was then a minor fixation with a time that kept popping up everywhere. After the talk, emails starting pouring in with an avalanche of hilarious...

During the 1600's, the exotic tulip became a nationwide sensation; some single bulbs even sold for ten times the yearly salary of a skilled craftsman. Suddenly, though, the demand completely plummeted, leaving the tulip market in a...

People have suspected that Earth rotates for thousands of years, but how did we first prove it?

Quantum field theory is notoriously complicated, built from mind-bendingly abstract mathematics. But are the underlying rules of reality really so far from human intuition? Or are physicists just showing off? For better or worse, the...

When you look in mirror, and see what you think is a perfect reflection, you might be looking at universe whose laws are fundamentally different.

The ocean has degraded within our lifetimes, as shown in the decreasing average size of fish. And yet, as Daniel Pauly shows us onstage at Mission Blue, each time the baseline drops, we call it the new "normal." At what point do we stop...

A meteorite crashed into earth!!!! This wasn't the first time and it won't be the last, but it is the first time such an event was captured by SO MANY CAMERAS! But besides providing the world with some hilarious, frightening, and amazing...