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Merlin knows about metallurgy, and will place in the immediate surroundings of the rock (or even IN the rock) a sacrificial anode made of magnesium, aluminium, zinc or another suitable metal. A ga …

The eye is a region of mostly calm weather at the center of strong tropical cyclones. The eye of a storm is a roughly circular area. … It is surrounded by the eyewall, a ring of towering thunderstorms where the most severe weather and highest winds occur. …

What keeps my planet's water from irreversibly concentrating over time on the frigid wastes while the rest of the planet dries up? When ice piles up, it will exercise pressure. The closer to the …

Mount Kilimanjaro is located close the equator (03°04′33″S 37°21′12″E) but its 5895 m high top is covered with permanent snow . Even better, the Mauna Loa, located on Hawaii Island, can give you a go …

Air pollution can heavily limit visibility. Look at Beijing: in days where the smog is heavy visibility is very limited. Since you are setting your world in medieval time, have a lot of coal and w …

Boats started off as simple tree trunks floating on the water, which where then carved to better accommodate the passengers. But that can only happen if the wood is lighter than water. There are vario …

If there is no atmosphere there will be no liquid water, and no water cycle. As you can see in the water phase diagram water needs at least 10 mbar to be in the liquid phase. Lower than that and your …

You cannot: the size of a world is so large that, even with an extremely narrow statistical distribution of physical values, you will end up with noticeable differences, which would not emerge on a la …

This is what you are quoting How does it work? Flames emits light and heat, so it seems impossible to make black fire. However, you actually can make black fire by controlling the wavelengths of abs …

To generate winds you need a temperature differential within the planet. Normally this is provided by the sun, heating at different temperatures different places. However, you can have differential …

Full and bright daylight will surely make all the show go barely noticed or totally unnoticed. If even the waning moon is not visible during the day, I believe the sun light of a clear day is sufficie …

Blood is water based solution. As all water based solutions, they don't freeze particularly well, meaning that some sort of separation/precipitation is expected to happen, leaving ice crystals with so …

Volcanic eruptions can make the sky dark as night. Just as an example, we can recall what Pliny the Younger wrote about the Vesuvius eruption in 79: Broad sheets of flame were lighting up many par …

There is no hope. Emergency units which are trained and equipped to contain emergencies like this can cope with small scale incidents like a truck breaking open it's load of acid on the highway after …

I also think that, due to the very low mass involved in the atmosphere, its capability of storing energy would be low, and therefore the weather phenomena resulting from this stored energy wouldn't be …