Danielle Smith-Llera

Millions of tons of plastic slip into oceans every year. Some floats and travels slowly with the currents, endangering the health of marine animals. The rest is hardly visible but is far more dangerous. Tiny bits of plastic sprinkle the ocean's surface or mix into the sandy seafloor and beaches. It ends up inside birds, fish, and other animals, harming them-and ultimately humans. Experts struggle with fear and hope as they work to stop the flood of...

"Immigration is a hot topic in the United States. What kind of immigration should be allowed? How should immigrants who have come into the United States illegally be treated? What about the DREAMers? Refugees seeking asylum? Will building a border wall keep out illegal immigrants and stop the flow of drugs into the U.S.? Might improving technology offer a better answer? Students will learn about the issues surrounding immigration and border security...