
But just how much harder? In 1962, the mathematician Tibor Radó invented a new way to explore this question through what he called the busy beaver game. To play, start by choosing a specific number of rules—call that number n. Your goal is to find the n-rule Turing machine that runs the…

Stone circles are the stuff of ancient rituals and druid mythology. While many of us are most familiar with the stone circle at Stonehenge near Amesbury, England, which dates back to about 2500 BC (4,525 years ago), there are numerous examples of ‘menhirs’ (standing stones) and ancient stone…

Fat, carbs, and protein. You’ll have heard of these three macronutrients before. But which is truly critical to your diet?
Answer: all of them. Together, they’re essential for keeping your body functioning; they give you energy and make sure all your cells are working properly.
However,…
Global dementia cases, driven mainly by population growth and enhanced life expectancy, are skyrocketing at the moment. Experts anticipate that by 2050, 153 million people could be living with the disease – triple the number today.
Meanwhile, progress towards a cure has been sluggish. The…

What a time to be a dog. Right now, it’s estimated that owners spend around £2,000 (about $2,600) a year to take care of our favourite four-legged friends (sorry, cats), with that figure including up to £600 (almost $800) on grooming and £300 (nearly $400) on treats.
But modern pooches…

Dr Gillian Sandstrom was at the opera when she realised how good she had become at talking to strangers. A woman with Parkinson’s was feeling anxious and needed an aisle seat and when Sandstrom noticed what was happening, she asked a whole row of people to move along to make room for the woman…

Amazon, Google, Microsoft, and H&M are currently investing in durable CDR. A spokesperson for H&M described the fast-fashion company’s purchase of 10,000 metric tons of durable CDR from the Swiss company Climeworks, one of the largest purchases to date, and said H&M plans to use them to…