Fusion Really Is 20 Years Away

Scientists always say that fusion is 20 years away, but this time the physicist says it’s for real.

by

December 7, 2010

Get the Big Think newsletter on Substack

Every Wednesday, Michio Kaku will be answering reader questions about physics and futuristic science. If you have a question for Dr. Kaku, just post it in the comments section below and check back on Wednesdays to see if he answers it.

Today, Dr. Kaku addresses a question posed by Kaloian Pavlov: What is the future of how we produce our energy supply?

Michio Kaku

Professor of Theoretical Physics

Full Profile

The Game Issue October 2025

Test Special Issue

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

3 videos 8 articles

A large square window frames a view of rows of houses and tall apartment buildings under a partly cloudy sky.

Related Content

The Future

The China factor in the great progression of the next 25 years

A firsthand look at China’s material progress and clean-tech revolution -- and what could happen if we let an authoritarian state steer AI's future.

by Peter Leyden

Large white letters spelling "AGI" are displayed on a platform in front of steps, with additional bilingual signs reading "REASONERS" and "CHATBOTS" in English and Chinese.

Starts With A Bang

Ask Ethan: Couldn’t COVID-19 have originated in a Chinese lab?

In theory, scientists could've produced a deadly virus that accidentally infected lab workers. In practice, we know that didn't happen.

by Ethan Siegel

The Future

What is The Great Progression: 2025 to 2050?

Tech expert Peter Leyden argues that we have a historic opportunity to harness AI and other transformative technologies in order to make a much better world over the next 25 years.

by Peter Leyden