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Why do many things sound different underwater? How are echoes made? Can you feel or see sound? Join us as we delve into the mysteries of sound. This webcast will feature an Aim High student demonstrating how to make a membranophone; Exploratorium physicist Dr. Paul Doherty modeling sound with ringing aluminum rods, corrugated plastic whirlies, and a slinky; and Marco Jordan, lead educator in the Exploratorium's Outreach program, demonstrating sound science with a "whine" glass and a singing bowl. Eames Demetrios, grandson of Charles Eames, has been director of the Eames office since 1993. Author, lecturer, multimedia designer, and filmmaker, his most recent book, An Eames Primer, is an intimate and informative look at the philosophy and spirit behind the work of Charles and Ray Eames. Founding Dean of the Architecture Program at California College of Arts and Crafts (CCAC), David Meckel began his career in the Eames Office in the 1970's. Focusing on the day to day experiences of working with Charles and Ray Eames, David will portray a day in the life of the office with the images, people, and idiosyncratic pleasures that made up the rich and dynamic environment that served as the laboratory for these two great designers. Watch as USA robots battle in the Sumo ring for world dominance and a $2,000 prize! Also check out the Quicktime archive of the 1999 and 2001 Competitions. Watch as Exploratorium staff and local teachers compete for the title of Iron Sscience Teacher. Each contestant has ten minutes to make a science lesson out of a secret ingredient. Exploratorium staff Ron Hipschman and Robyn Higdon sum up the last five days of spacewalks, and show a couple of good-bye conferences with the shuttle astronauts. The Near Infrared Camera and Multi-Object Spectrometer (NICMOS) will be brought back to life with the installation of the new experimental NICMOS cryo-cooler. The cryo-cooler updates the technology from that of an icebox to a modern refrigerator. We also talk to Keith Noll, head if the Hubble Heritage Project, which is responsible for bringing us those stunning pictures from deep space. The Advanced Camera for Surveys (ACS) was successfully installed. In preparation for the installation of the NICMOS Cooling System tomorrow, the astronauts also installed the Electronics Support Module. We also talk with Massimo Stiavelli, a scientist at the Space Telescope Science Institute about his involvement with the ACS and the future Wide Field Planetary Camera 3 (WFPC3) scheduled to be installed during the next servicing mission in 2004. Learn about the successful replacement of the Power Control Unit (PCU) and listen as we talk with Mark Clampin, part of the team that developed the Advanced Camera for Surveys scheduled for installation tonight. We learn about Hubble's new solar arrays, and Dr. Bruce Margon talks about the future of Hubble and about the Next Generation Telescope, which will eventually replace Hubble.