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On June 6, 2015, the Exploratorium hosted the Science of Sharing Forum, a public event featuring presentations by researchers and educators and activities exploring cooperation and sustainability. These talks and demonstrations shed light on how scientists study human behavior and fostered insight into large-scale societal challenges—such as energy use, ecosystem collapse, international conflict, and climate change—that depend on people negotiating ways to share finite resources and act for the long-term good of all.

Dr. Athena Aktipis is a cooperation theorist and theoretical evolutionary biologist working at the intersection of social psychology, biology, anthropology, and medicine. She is Assistant Professor of Psychology at Arizona State University and co-founder of the Center for Evolution and Cancer at UC San Francisco. She is particularly interested in cooperation in large complex systems, such as multicellular organisms and human societies.

Take a good look around: The ho-hum spots you inhabit every day are actually secret laboratories full of fascinating and eye-popping amazement—from the instant you wake up to the time you nod off at night! Discover these awe-inspiring scientific playgrounds with Exploralab—the hands-on, action-packed activity guide from the world's most beloved and fun-filled laboratory, the Exploratorium, in San Francisco. Exploralab contains tons of way-cool tools of inquiry to help kids get in on the science fun, including: a magnifier, reflective paper, fabric swatches, an eraseable whiteboard, textured paper, a spinning disc, polarizing filters, colored acetate sheets, and glow-in-the-dark ink!

Senior Staff Scientist Thomas Humphrey invents a simple experiment to see if the Giant Mirror is spherical or parabolic, and then to see if it's perfectly spherical. By placing a Styrofoam ball at the center of curvature, he's able to prove that the mirror is out of pure sphericity by about one-quarter of one degree.

Staff Neuroscientist Richard Brown demonstrates that the Giant Mirror reflects infrared radiation as well as visible light.

An introduction to the Ice Balloons activity, in which learners explore globes of frozen water and learn how to ask and then answer 'investigable' questions.

A detailed demonstration of how to do the Ice Balloons activity, including a discussion of materials needed and strategies for getting learners to ask and then investigate questions about what they are seeing.

The science and pedagogy behind this activity, including a discussion of concepts such as density, temperature, thermal conductivity, center of mass, freezing point depression, heat capacity, and the characteristics of the states of water, water vapor, and ice. Also describes strategies for observing, asking questions, and then choosing a question to investigate further.

An introduction to making a simple rocket and a rocket launcher, including a demonstration of how the finished model will fly.

A step-by-step demonstration of how to make a simple rocket, including a discussion of materials needed and where to get them.

A step-by-step demonstration of how to make a launcher to send your rocket sky-high, including a discussion of materials needed and where to get them.