Marcus Webb 
Your body holds somewhere around 30 trillion cells, and you also host roughly 38 trillion bacteria — which means most of the cells in “you” are not human. Ask a biologist what is a cell and you get a definition with three parts: a membrane that separates inside from outside, a set of instructions, and … Read more
There are roughly 40,000 pieces of debris larger than a softball in Earth orbit, about 1.1 million between a marble and a softball, and an estimated 130 million smaller than a millimetre. All of it is travelling at around 17,000 mph. So what is space debris in practical terms? It is the reason the International … Read more
The hardest part of explaining how do mars rovers work is that the rover itself is the easy half. Designing a car that can drive around Mars is a solved problem. Getting it onto the surface intact — through an atmosphere too thin to brake with parachutes alone and too thick to ignore — is … Read more
Most explanations of how do satellites work start with gravity and stop there, which leaves the interesting parts out. A satellite is not a machine that floats; it is a machine that is permanently falling and permanently missing the ground. Get that one idea straight and the engineering — the orbits, the power budget, the … Read more
Software can run the experiment you cannot build — a vacuum, a frictionless surface, a circuit that would catch fire. It cannot teach that glassware breaks. Here is where the line actually falls.
What is quantum computing? It is computing that uses quantum states — superposition, entanglement, interference — to process information in ways classical bits cannot. The honest framing matters here, because the popular coverage wildly overstates it: a quantum computer is not a faster version of your laptop. It is a different kind of machine that … Read more
Why do we dream? The honest answer is that nobody knows for certain, and it is worth being upfront about that before surveying the theories — because this is a topic where confident explanations vastly outrun the evidence. What we have are several plausible, partially-supported accounts that are not mutually exclusive. What We Know For … Read more
Do we only use 10 percent of our brain? No. This is one of the most durable myths in popular science, and it is flatly contradicted by everything we can measure. Brain imaging shows activity throughout the organ, and the claim has no identifiable source in legitimate neuroscience. What Brain Imaging Actually Shows PET and … Read more
Most weekly science experiment plan templates fail for a boring reason: they assume you have two free hours and a fully stocked cupboard. You do not. What actually works is a rotation short enough to survive a bad week, with one activity that runs in the background so there is always something happening even when … Read more
How to teach science to preschoolers is mostly a matter of giving up on the idea of teaching. At three or four, children are not absorbing facts — they are building the habit of noticing, wondering, and checking. That habit is what later science sits on top of, and no kit or curriculum installs it … Read more