A lot of tech companies have pledged that their operations are — or will — become carbon neutral. But this week, Microsoft announced plans to become carbon negative in the next 10 years. That means it will invest $1 billion in technologies to remove carbon from the atmosphere in addition to using more renewable energy or offsetting the emissions it creates. In fact, Microsoft announced that by 2050, it wants to remove the equivalent of all the carbon that the company has ever emitted in its 44-years. Ikea is the only other major company that’s made a similar promise, which, let’s be honest, sounds expensive.