At the door there’s a bike. Start peddling to turn the lights on.

After a quick warmup, you can find your way to the rest of the gym. All the other machines also power the lights, air conditioning, showers etc.

Hey that’s exactly what I’ve wondered for years. Just get rid of all those useless weights, and replace them with generators.

Gold is a very useful metal, and I would like it to be as cheap as aluminum. There are so many things you could do with a metal with great conductivity and chemical resistance. Currently, high price is preventing us from building all sorts of things out of it.

So, if you’re ever get the chance to turn worthless trash into gold, you should go for it.

Yeah, you’re right. None of these absurd journeys can take place if the rest of the population struggles to survive. My guess is, wrecking the whole planet beyond repair is the only thing that will force governments to start banning fossil fuels and investing in carbon capture and storage technologies.

Humans are so invasive that they have gone to places that can’t even support human life for prolonged periods of time. Deep sea trenches, tall mountains, polar ice caps etc. Even the Moon isn’t safe from humans, and now they are also planning to invade Mars. Once they’ve spread all over every planet, moon and asteroid in the solar system, they’ll probably try to land on the Sun.

Ice also has a fairly high specific heat capacity, which means that changing the temperature means there’s lots of energy involved. Energy can’t just leave the ice at whatever rate you want, which means there’s a potential bottleneck.

As the environment cools down during a clear skies, there a lot of energy trapped inside the snow, and it’s leaving at some slow pace. Even when there’s less heat in the snow, that change translates to a very small difference in temperature. The air around it can also cool down much faster, which means that the temperature difference can be surprisingly big.

You can also go 3D. January 8, February 5, March 4, April 8 would be 4 in a stack.