How can astronomers detect planets? Astronomers can detect planets by seeing how they dim their stars, how they pull on their stars, and how they filter the light coming from their stars. So far, astronomers have detected 5,867 planets in 4,377 planetary systems. There are another 2,958 that haven’t been confirmed yet. That’ll bring the […]
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How do cities affect animal evolution? Animals have to evolve to survive in cities in numerous ways. They have to cope with the heat, the buildings, vehicles, different food sources, and many other things as well. In the history of our planet, urbanization is a relatively recent concept. The first cities appear to have sprung
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What is the Great Filter? The Great Filter is one of the possible explanations for why we might not find other intelligent life in the universe. It is a point at which no intelligent life can pass. You may have heard of the Fermi Paradox. I wrote an article about it before. Enrico Fermi was
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Why is there no cure for the common cold? There is no cure for the common cold because it is a virus and because there are so many different forms of it. The common cold is called the common cold because it is the most common of all the illnesses humans get. There is obviously
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Could teleportation be possible? In theory, teleportation could be possible, but in practice, it isn’t. When I say that something isn’t possible, I mean with current technology or the technology that is likely to be around in the future. There is obviously no way of knowing what kind of advances might appear in the future,
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What is the Boötes Void? The Boötes Void is an area of space 330 million light years across that only contains 60 galaxies. It is found in the constellation known as Boötes. It is sometimes called the “Great Nothing”. The Boötes Void was discovered by an astronomer called Robert Kirshner in 1981. He was looking
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Are cryonics possible? Cryonics might be possible in the future, but there is no way at the moment to imagine how it would be possible. The basic idea behind cryonics is that someone who is sick and cannot be healed by modern medicine is frozen when they die so that they can be revived at
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How many types of plastic are there? There are many different types of plastic, but they have been grouped into 7 different types of plastic. They are PET, HDPE, PVC, LDPE, PP, PS, and other. You can tell which ones they are because of their Resin Identification Code, which has a triangle made of arrows
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What were the ratlines? The ratlines were the routes that many Nazis used to escape from Germany after the end of World War 2. Many of them escaped to countries in South America, but some were even accepted into the United States. At the time, the name “ratline” was only used to refer to Croatian
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Why are some oils healthier than others? Some oils are healthier than others because of the amount of saturated fat they contain, the way they are made, and what they are made from. We all know that olive oil is good for you and many people cook with it and drizzle it on their salads.
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