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"The Naked Scientists are a media-savvy group of physicians and researchers from Cambridge University who use radio, live lectures, and the Internet to strip science down to its bare essentials, and promote it to the general public. Their award winning BBC weekly radio programme, The Naked Scientists, reaches a potential audience of 6 million listeners across the east of England, and also has an international following on the web."

"The Macaulay Library is the world's largest and oldest scientific archive of biodiversity audio and video recordings"

loons on Mason Lake and a chorus of birds in Queensland, Australia, thanks to this Mashable link to the free natural sounds archive, now available online from the Macaulay Library at the Cornell Lab of Ornithology. As Open Culture reports, the recordings go back to 1929.

"The Women in Science, Technology, Engineering, and Mathematics hopes its online radio series featuring stories of fascinating women scientists, engineers, and educators will inspire girls-including those with disabilities-to pursue STEM careers."

"The Voyager 1 spacecraft's 35th anniversary is proving to be unexpectedly exciting, as scientists gathered this week to examine new hints that the spacecraft is on the verge of leaving our solar system. Voyager 1 is now more than 11 billion miles away from Earth. It blasted off in September 1977, on a mission to Jupiter and Saturn. But it also carried a Golden Record filled with music and the sounds of our planet, in case it encountered intelligent life as it moved out toward the stars."

"En route to the Moon, approximately 200,000 miles (320,000 km) from Earth, Mission Control asked Swigert to turn on the hydrogen and oxygen tank stirring fans, which were designed to destratify the cryogenic contents and increase the accuracy of their quantity readings. Approximately 93 seconds later, just under 56 hours since launch, the astronauts heard a "loud bang", accompanied by fluctuations in electrical power and firing of the attitude control thrusters.[6] The crew initially thought that a meteoroid might have struck the Lunar Module (LM)."

not free but the 30 sec demo clips give you an idea about what these are - encourage students to create their own - "Our science songs cover science subjects taught in elementary school, middle school and high school, ranging from earth science and planets to biology and chemistry. "

"Growing The Technology For Artificial Leaves Researchers are developing practical, low-cost materials that can use energy from sunlight to break water into oxygen and hydrogen. Daniel Nocera of MIT explains the science of 'artificial photosynthesis,' and describes his plan to create distributed power generation systems in developing countries."

"The Build a Plane project has grown wings since last summer when it was introduced as an idea for students to learn more about the aviation industry in Talkeetna. The project may be the biggest volunteer effort Talkeetna has seen in years. Sue Deyoe was at their recent project evening and has more on the project."