In different ways. For example, it’s very rare for a car to explode in a collision, other than in movies.

One of the reasons that make hydrogen difficult to work with in this sense is that hydrogen (H₂) molecules are so small that they can permeate most materials, such as steel. Then it can get somewhat easily to wherever there is a spark, and chaos ensues. Annoyingly you don’t even need 100% Hydrogen for that to happen, as it can ignite with a concentration of just 4%.

After we stopped using Hydrogen mostly as a consequence of Hindenburg’s accident, it’s taken years to perfect hydrogen fuel cells to a safety standard that can be used in cars. As far as I know, its use has been limited to rockets/space propulsion otherwise (where you can just throw millions at the problem to make it safer).

Only 6M €? For an event of that size that feels a lot cheaper than I would have thought.

Even assuming we’re okay with using AI for language learning - then why would anyone pay for Duolingo instead of the many LLMs that people already use and pay for?

They’ve alienated their customer base hard. And this marketing video pretending they are siding with the users and against “their corporate overlords” is horribly tone deaf.

In my view it’s a Linux subsystem for Windows.

Why the name is the other way around, I’ll never understand.