Is blood ever blue? That is, is there ever really such a thing as blue blood – outside the science-fiction world, anyway?
Is it possible to grow your own penicillin at home? Not just any mold, but actually make mold with medicinal benefits. Solid gold mold Penicillin was discovered rather accidentally by Alexander Fleming in 1928, when he noticed that mold growing in a petri dish had killed all the staph bacteria around it. Since then, penicillin has gone…
Despite manmade paper snowflakes looking the same every year, scientists say the old saying is true: no two snowflakes are alike – if they’re large enough, that is. Find out more and see examples here!
After evolving from horses some two million years ago, zebras came to have a distinctive pattern. So why do zebras have stripes? A team of scientists has found at least part of the answer.
How come fish have mercury in them – because isn’t seafood supposed to be healthy to eat?
If you have sesame seeds, what will they actually grow into? Put simply: What is a sesame plant like?
If you’ve ever watched astronauts, you’re bound to wonder at some point: Where – and how – do they go to the bathroom?
Is a tomato a fruit or a vegetable? It depends on who you believe: botanists or the Supreme Court. Here’s the story.
If you think you felt a little shaking going on, how can you find out for sure if there was an earthquake or not? We know all the best places to look.
Considering all the technology available now, you may wonder: Are there any shipwrecks – or pirate treasure – yet to be discovered?
Is it true that the Italian city of Venice is sinking – to such a degree that it will be underwater in the near future? Here’s what’s happening.
What is the difference between AM and FM radio – aside from the obvious programming differences with talk radio versus music?
If you’ve heard of a plane having to dump fuel before landing, you probably wonder: Why would they waste that expensive jet fuel – and where does it all go?
Nature’s own light show, the aurora borealis, or Northern lights, have been dazzling observers for, well, as long as there have been observers. But what is it?
Why do people have trouble remembering their dreams? And more to the point: is there anything you can do to improve your dream recall? Get some tips here!
You probably remember messing around with helium balloons and having a great time sounding like Alvin and the Chipmunks. But why does that work?
You might hear pilots talking about headwinds and tailwinds, but how does the jet stream actually affect your flight? More to the point: What is the jet stream?
What creates meteor showers, and where can you find out the best times and places to see lots of these shooting stars?
After you toss your empties into the recycling bin, where do your bottles and jars go? The glass recycling journey is simpler than you may think.
How many people have ever lived on Earth in all of time? Is it even possible to answer this question? Yes, it is possible.