Guest Thinkers — February 16, 2011

Video – Education in America

Scott McLeod

The most surprising and impactful new stories delivered to your inbox every week, for free.

Here’s a video from GOOD and the University of Phoenix. Happy viewing!

(hat tip to Dennis Richards)

The most surprising and impactful new stories delivered to your inbox every week, for free.

Infographic illustrating three steps to measure the Hubble Constant, showing Cepheid variable stars, supernovae, and galaxies at increasing distances with redshifted light—highlighting how these methods reveal that the hubble tension is real.

Starts With A Bang

Ask Ethan: Is the Hubble tension a real problem?

Is the Universe’s expansion rate 67 km/s/Mpc, 73 km/s/Mpc, or somewhere in between? The Hubble tension is real, and not so easy to resolve.

Two women with long hair and dark coats face each other against a divided background, evoking a Socratic dialogue. A red scribbled area looms above, while light and dark halves split the scene behind them.

Mini Philosophy

3 ways to have more meaningful conversations

Can you be my Socrates?

A composite image showing a galaxy with red circles marking stars on the left and multicolored expanding rings with Earth on the right, all set against a grid background, illustrating concepts like Hubble tension studied by Wendy Freedman.

Starts With A Bang

Is the Hubble tension real? Exclusive interview with Wendy Freedman

Different methods of measuring the Universe’s expansion rate yield high-precision, incompatible answers. But is the problem robustly real?

Circular astronomical image showing constellations and celestial objects labeled against a dark sky, reminiscent of a NASA PUNCH video sun corona visualization, with a timestamp of 2025-06-03 01:52 at the bottom left.

Starts With A Bang

Video: NASA’s PUNCH mission sees the Sun’s corona in action

Launched in March, the PUNCH mission has viewed two incredible coronal mass ejections, tracking them farther from the Sun than ever before.

A flowchart with a large question mark at the top leads to boxes containing photos, abstract patterns, and arrows connecting each step on a textured green background.

Smart Skills

When to quit: A simple framework for life’s toughest decisions

Annie Duke, a poker champion turned decision scientist, talks with Big Think about how to choose well under uncertainty.

Up Next

Guest Thinkers

We can’t let educators off the hook

Steve Dembo said: I don’t see it as teachers spurning technology, or choosing not to take advantage of those new ideas and tools. I think most teachers don’t even realize […]