Imagine being able to switch a tiny group of brain cells on or off with light. Not metaphorically. Not through a thought experiment. Scientists can actually do this in laboratory animals. This extraordinary idea lies at the heart of the 2026 Nobel Prize in Physiology or Medicine, awarded jointly to Karl Deisseroth, Peter Hegemann and Georg Nagel for discoveries concerning light-gated ion channels and optogenetics . Their work created a new way of studying the brain by allowing researchers to control specific nerve cells using light. The science sounds complicated at first. But the basic idea is surprisingly simple: They helped turn light into a remote control for neurons. And that changes the way we understand the brain. The brain: billions of cells talking at once Our brain contains billions of nerve cells, called neurons . Neurons communicate with one another using electrical and chemical signals. When groups of neurons become active, they help produce everything fr...
Democracy depends on elections, but elections depend on something even more fundamental: trust in the institution conducting them. A voter may disagree with a candidate, a political party or even an election result. But the democratic system begins to weaken when people start questioning the neutrality of the institution that conducts the election itself. Interestingly, this concern is not new. It was already being debated in India’s Constituent Assembly in 1949 , long before the first general election of independent India. The members were not merely discussing who would appoint a constitutional officer. They were wrestling with a much deeper question: How do you make the referee independent when the government of the day has an interest in the game? That question has travelled from the Constituent Assembly to the present. A seemingly simple constitutional provision The Constitution placed the superintendence, direction and control of elections in the hands of the Election...