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Come out to play on the concrete slides at Seward Street Mini Park in the Castro. A series of speed tests guided by physicist Paul Doherty takes on the question asked by sliders everywhere: How can I go faster?

TI teacher coach Zeke Kossover explains how he uses short, focused lab activities to really get concepts across to his students.

With two rovers on Mars, we update you on the latest findings. This week, hear (and see!) more about a tool called Mini-TES, which helps us learn about rocks on Mars.

Chris McKay, Planetary Scientist at the NASA Ames Research Center, has traveled the world seeking Mars-like environments. In the Dry Valleys of Antarctica—his favorite Mars analog on Earth—Dr. McKay discovered a kind of algae living inside rocks porous to light and water. He’ll show us some of these rocks and talk about the physical conditions required for life.

Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week’s “secret” ingredient: tennis balls!