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In this episode, Mo Rocca explores how teen inventors are out to stop distracted driving, and learns how Thomas Edison’s inventions are still making us look all look like slackers. Then, he explores the invasion of the drones and windmills the size of fleas that have the potential to revolutionize electric power.
(Source: DCMP)
When pterosaurs first took flight, it may have marked the beginning of the end for the winged reptiles. Some evidence gathered suggests that the power of flight led to evolutionary changes in the reptiles, which may have ultimately led to their downfall. Part of the "Eons" series.
Guides deaf women through the first trimester of their pregnancy. Discusses medical considerations, nutrition, fitness, pregnancy, rights to an interpreter, and other issues. Also, covers what changes your body may experience by month to month. Lists 129 words in sign language. Hosted by Deanne Bray of "Sue Thomas: F.B. Eye" and Missy Keast.
Guides deaf women through the second trimester of their pregnancy. Discusses medical considerations, nutrition, fitness, pregnancy, rights to an interpreter, and other issues. Also, covers what changes your body may experience by month to month. Lists 129 words in sign language. Hosted by Deanne Bray of "Sue Thomas: F.B. Eye" and Missy Keast.
Guides deaf women through the third trimester of their pregnancy. Discusses medical considerations, nutrition, fitness, pregnancy, rights to an interpreter, and other issues. Also, covers what changes your body may experience by month to month. Also, explains stages of labor, C-section, discomforts of pregnancy, and monitoring fetal movements. Hosted by Deanne Bray of "Sue Thomas: F.B. Eye" and Missy Keast.
Throughout U.S. history, Hispanics have contributed and achieved in building the West, in medicine and science, in entertainment, journalism, business, education, civil rights, politics, in sports, and more. Highlights Judy Baca bringing the Hispanic muralist movement to the United States, Roberto Clemente as the first Hispanic elected into baseball's Hall of Fame, Hispanic golfer Nancy Lopez winning her first LPGA Championship, Walter Alvarez proposing dinosaur extinction caused by asteroid impact, Franklin Chang-Diaz as the first Hispanic American in space, Dr. Antonia Novello as the first Hispanic surgeon general, and Linda Alvarado winning the Horatio Alger Award.
A chart of exponential growth shows that some things change faster over time. Back in 1798, Thomas Malthus noticed that not everything grows this way. This caused people to worry, and they were sure it would lead to massive death, starvation, and famine. However, the Green Revolution kept this from happening, and scientists are currently working to produce enough food for the current exploding population. Part of the “It’s Okay to Be Smart” series.
Imagine having the ability to manipulate light waves in order to see through a skull right into the brain, or being able to use lasers to diagnose a bacterial infection in a matter of minutes. At the Center for Biophotonic Sensors and Systems (CBSS) at Boston University, technologies enabling these abilities and many others are coming to light. With support from the National Science Foundation (NSF), mechanical engineer Thomas Bifano and his colleagues are developing optical microscopes that can image deep into biological tissue, helping scientists observe molecular-scale activity. Their goal is to revolutionize the diagnosis and treatment of disease. Part of the National Science Foundation Series “Science Nation.”
Timeblazers Sam and Jen meet some geniuses of the past, including Nicholas Copernicus, the first to map out the Solar System; William Shakespeare and his magnificent Globe Theatre; Benjamin Franklin, a great inventor, printer, and philosopher; Thomas Edison, who invented the first practical incandescent light bulb; Eratosthenes, who used a stick to figure out the size of the earth and that the planet was round; Plato, a great philosopher and thinker; Jean-Francois Champollion, who unlocked the mystery of the Rosetta Stone; Magellan, who was the first to sail around the world; and the "Renaissance Man," Leonardo da Vinci.
Identifying the key molecular players in planarian regeneration may offer clues into how the process may work in other species, including humans. HHMI investigator Alejandro Sánchez Alvarado and postdoctoral fellow Alice Accorsi use RNA-mediated genetic interference (RNAi) to silence different genes in planaria and determine how they affect regeneration.
