Learn More
About This Topic
Take a closer look, there is always more
to explore:
Choose a link to a video, website, article or other resource to find out more
Do we really need pesticides?
TED ED: Fernan Pérez Gálvez
Annually, we shower over 5 billion pounds of pesticides across the Earth to control insects, unwanted weeds, funguses, rodents, and bacteria that may threaten our food supply. But is it worth it, knowing what we do about the associated environmental and public health risks? Fernan Pérez-Gálvez weighs the pros and cons of pesticides.
TED Talk: Teenage Inventor Gitanjali Rao
Video: TED Talk
A 12-year-old inventor's device for detecting lead in water . After seventh grader Gitanjali Rao heard about the Flint water crisis, she wanted to do something to help, After much research, she created "Tethys" -- a device that can detect lead in drinking water.
The Vascular System and Human Transportation
Video - TED Talk Wanis Kabbaj
What if traffic flowed through our streets as smoothly and efficiently as blood flows through our veins? Transportation geek Wanis Kabbaj thinks we can find inspiration in the genius of our biology to design the transit systems of the future. In this forward-thinking talk, preview exciting concepts like modular, detachable buses, flying taxis and networks of suspended magnetic pods that could help make the dream of a dynamic, driverless world into a reality.
The Inside Story of the Paris Climate Agreement
Video - TED Talk: Christiana Figueres
What would you do if your job was to save the planet? When Christiana Figueres was tapped by the UN to lead the Paris climate conference (COP 21) in December 2015, she reacted the way many people would: she thought it would be impossible to bring the leaders of 195 countries into agreement on how to slow climate change. Find out how she turned her skepticism into optimism — and helped the world achieve the most important climate agreement in history.
The Four Fish we are Overeating
TED Talk: Paul Greenberg
The way we fish for popular seafood such as salmon, tuna and shrimp is threatening to ruin our oceans. Paul Greenberg explores the sheer size and irrationality of the seafood economy, and suggests a few specific ways we can change it, to benefit both the natural world and the people who depend on fishing for their livelihoods.