In 1915, British astronomer Arthur Stanley Eddington was fascinated with Einstein's new theory of general relativity. The theory talks about how forces push and pull objects in space. Einstein said that the sun's gravity could pull and bend light.

This is the exciting story of a soil scientist confronting politicians to encourage them to pass a law to protect the land, the soil. When the US Congress passed a law establishing the Soil Conservation Service, it was the first government agency in the world dedicated to protecting the land, to protecting the Earth. 

Solid wax is somehow changed into light and heat. But how? Travel back in time to December 28, 1848 in London, England to one of the most famous juvenile science Christmas lectures at the Royal Institution. British scientist Michael Faraday (1791-1867) encouraged kids to carefully observe a candle and to try to figure out how it burned. Known as one of the best science experimenters ever, Faraday’s passion was always to answer the basic questions of science: “What is the cause? Why does it occur?”

People were dying! Malaria is a deadly mosquito-borne disease that causes fevers, chills and often death. In 1969, the People’s Republic of China created a task force to find a cure. Working in the 1970s, Chinese scientist Tu Youyou reviewed the traditional Chinese medicine (TCM) scrolls for ideas on where to start her research. She found 640 traditional treatments, and methodically started extracting compounds and testing them against malaria. Would any of them work? Follow the struggles of Nobel Prize scientist Tu Youyou as she works to find a cure to malaria.

Plastic bags are cheap and easy to use. But what happens when a bag breaks or is no longer needed? In Njau, Gambia, people simply dropped the bags and went on their way. One plastic bag became two. Then 10. Then a hundred. The bags accumulated in ugly heaps alongside roads. Water pooled in them, bringing mosquitoes and disease. Some bags were burned, leaving behind a terrible smell. Some were buried, but they strangled gardens. They killed livestock that tried to eat them. Something had to change.