A private start-up called Helion aims to have a working fusion reactor by 2028

Building a working nuclear fusion reactor has proven to be a daunting challenge even for multiple wealthy nations, as we've seen with the much-delayed ITER project. However, a private start-up called Helion thinks it can build one and start supplying energy by 2028 by taking a different approach than other reactors. Founded in 2013, Helion is in the news thanks to a $425 million funding round, backed by billionaires like Sam Altman and Peter Thiel. With more than $1 billion raised, the company i...