Guest Thinkers — February 16, 2011

Top posts

I changed the blue button on the right side of this blog. It now reads Top posts. If you click on the button, you will see a running list of what I believe are my best posts since I started blogging. If you’re fairly new to this blog and like what you’re reading, you may enjoy going back and seeing some of my ‘greatest hits.’

Happy reading!

Starts With A Bang

The unsurprising non-detection of intelligent aliens

Life arose on Earth very early on. After a few billion years, here we are: intelligent and technologically advanced. Where's everyone else?

A person in a dark robe wielding a glowing red lightsaber on a desert dune under a night sky with a large crescent moon and a visible planet.

High Culture

Does science fiction shape the future?

Six visionary science fiction authors on the social impact of their work.

A human brain preserved in a clear glass container filled with a yellowish preserving fluid, set against a bright, light green background.

13.8

The key problem with the “brain in a vat” thought experiment

Even with the best technology imaginable, you'd probably never be able to exist as a consciously aware brain in a vat.

A dramatic solar eclipse with a radiant ring of fire visible around the moon, set against a backdrop of clouds and a sunburst.

13.8

A cosmic coincidence: What eclipses tell us about Earth

Total eclipses are a product of a strange and almost eerie cosmic coincidence — one that makes Earth an even rarer world in the galaxy and, by proxy, in the Universe.

Starts With A Bang

If photons have mass, could they explain dark matter?

Our Universe requires dark matter in order to make sense of things, astrophysically. Could massive photons do the trick?

Up Next

Guest Thinkers

Vision challenge – Part 1

Here’s a challenge for all of us educational technology advocates… Can we articulate in a few short sentences or paragraphs what the end result looks like? Children learning collaboratively, students […]