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Bi58, with a little help. An alloy of bismuth and tin in the proportion 58:42 known as Bi58. by itself has a melting point of 138 °C (280.4 °F), but doesn't by itself have suitable properties to...
Run tests via in vitro fertilization Use multiple women at multiple fertility clinics to make sure the process works in at least a few of them. You can use any woman who is just about to ovulate ...
One possibility could be wind-powered plants. A tidally locked planet with a stable atmosphere must necessarily have powerful winds transporting heat from the day side to the night side. (Ocean c...
San Nicolas Island San Nicolas Island is part of the Channel Islands of California. The weather is lovely year round (some rain but no extremes of temperature). (By Lencer - own work, used:Googl...
The cold side would need to be a near desert, or in a few hundreds of years all the water would be trapped in the ice on the cold side. You would need some way to keep the moisture on the warm sid...
It's a food intolerance Whether a true allergy (histamine mediated reaction using IgE, IgG, IgA, etc), a metabolic issue (lactose intolerance, celiac disease, etc), or a reaction without a known c...
One effect could be the illusion that the craft is moving backward, as the light from the vehicle being close to you reaches you before the light of the vehicle being further away. This would only ...
The aliens know some mathematics that we don't. In the question, there is mention of a particular rectangular projection, best known as the Mercator projection. However, there are many other ways...
Maps don't have to be geographical, they can also be diagrammatical, like the London Tube map. For instance, ancient Roman maps, the itinerarium, were graphs showing points of interest along a road...
This answer stands as an historical artifact, obsolete because of an edit to the question's tags. Energy-rich minerals of unknown composition from the surface of Mercury. Mercury, the planet has ...
Let's assume that this student wants to begin by understanding the twin pillars of modern physics: quantum mechanics and general relativity. There are several major tools in the toolkit of anyone s...
I can see four key problems with the system as you've described it: Giant planets. The major thing that concerns me about the system is the presence of at least two gas giants. It's long been tho...
As I see it you have 3 issues here: Gravity. Normally sodium circulation would occur because of a temperature/density gradient which facilitates convection to carry it through the heat-exchange...
Losing two liters of blood in and of itself is life-threatening but would not necessarily cause someone's death (assuming this is an adult human or someone with a similar blood volume). Exsangu...
The five primary layers of the atmosphere are, with increasing, altitude, the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The corresponding boundaries are the tropopause, st...
Carbon planets We typically expect a moon's composition to reflect the part of the protoplanetary disk it came from. If it's orbiting a planet close to the star, we'd expect it to be composed larg...
Any way you want. It depends on the energy you have available. To not tether them requires that you have thrusters of some kind to enable them to maintain position (ie. not crash into the planet)...
Tool use (a prerequisite for developing technology) comes in all shapes and sizes: Corvids wield sticks with their beaks. Attribution - Science news Some animals have developed specialist tool...
Firefly lanterns are a thing. Even children can do it! Put any males that arrive into your lantern. At least 40 fireflies per lantern should give you plenty of light. Release them, unharmed,...
I don't have a solution; what I do have is a possible path to a numerical solution. For the sake of simplicity and sanity, I will consider the special case of a non-rotating, chargeless, spherical...
As the sphere is self-gravitating, it must be in hydrostatic equilibrium; that is, there must be a non-zero pressure gradient to balance the force of gravity. For a fluid of uniform density, you ca...
Very plausible. One example is the Feather River of California. The West Branch and Middle Fork combine at the top of Lake Oroville, which is a long skinny lake running north/south. At the botto...
A meteor strike. Meteor Crater formed in a fraction of a second as 175 million tons of limestone and bedrock were uplifted, forming the mile-wide crater rim in the formerly flat terrain. ...
It's not the same as "smelling" it, and as far as I can find, there are no studies testing this ability, but there are countless stories about cats (and sometimes dogs) who saved their human famili...
Yes, there is likely a way, though I will admit I'm not sure how much of the desired about 20x difference it will get you. By the time you get into those mass ranges, the strength of the bones, ten...
