Guest Thinkers — February 16, 2011

Key question

A weekly newsletter featuring the biggest ideas from the smartest people

Pixelated red human figure on a black grid background with blue symmetrical curves and white geometric shapes adjacent.

In November 1974, astronomers used the radio telescope at Puerto Rico’s Arecibo Observatory to send a hello to the universe.

An open book with abstract designs: the left page displays a horizontal row of color blocks, while the right page features a hand touching a network of connected circles, highlighting strong connections.

Business

Why our “weak-tie” connections are actually super-strong

Sure, “who you know” matters — but your best contacts will be the ones you don’t know very well.

Starts With A Bang

Could dark matter be the same thing as dark energy?

Two parts of our Universe that seem to be unavoidable are dark matter and dark energy. Could they really be two aspects of the same thing?

Global geoid map with colorful variations representing differences in Earth's gravity field. The scale ranges from -100 (low) to 100 (high). Europe's position is central.

Starts With A Bang

Scalar fields: the secret sauce of theoretical physics

Scalars, vectors, and tensors come up all the time in physics. They’re more than mathematical structures. They help describe the Universe.

Collage of geopolitical symbols, featuring a close-up of a man's bald head, China's flag, a globe highlighting Taiwan, and circuit patterns.

The Present

Why the USSR and China fell behind the US in the Chip Cold War

Both nations made missteps, but China still has a chance to make up lost ground.

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