Sesame Street's Telly teams up with 5facts' Annie Colbert and Matt Silverman to explore sand, chalk, strawberries, velcro, and lint up close: 5 Hidden Worlds Revealed Under a “MEGA” MICROSCOPE, microscope, microscope…

For more science, tech, engineering, and math with Sesame Street, check out SesameStreet.org/STEM, and in the archives: Annie, Matt, and Grover do science.

Shape, a film about design and how it can change our experiences in the spaces that we live. “If for one day you had the power to make your world work better, what would you change?” Presented by Pivot Dublin and Dublin City Council, directed & designed by Johnny Kelly, and written by Scott Burnett. Explore more at MakeShapeChange.com, think design.

Related watching: design.

via Vimeo.

Jeremy Meek walks across the Brooklyn Bridge, taking one photo for every step or so. Step, snap, step, snap, step, snap. The Manhattan skyline grows larger in front of him, and people stroll, jog, and ride by as he documents his way across the East River in just over an hour and a half. Walking Across the Brooklyn Bridge in 1,177 PhotosSong: "Lovers’ Carvings" by Bibio, currently free on Amazon.)

Related videos: Joey Ramone - New York Cityanother quiet ode to the Brooklyn Bridge, and flip books.

via Laughing Squid.

Discovered by German physicist Helen Sperl in 1891, popularized in 1950 by Danish engineer Werner Ostberg, and demonstrated here by Grand Illusions' Hendrik Ball, this is a Tippe TopWatch as it spins “at a high angular velocity,” turning itself upside down to spin on its stem. But wait, there’s more

The interesting thing is that when the Tippe Top inverts, it also changes the direction of the rotation! In other words, at some point during the inversion, the top stops spinning around the axis through the stem and then starts to rotate the other way. At the same time, the center of mass is lifted, and the top is thus a quite interesting problem concerning conservation of energy and angular momentum.

There’s more physics and toy videos in the archives, including another from Grand Illusions: the Spiraculum.