Earth is losing its natural cooling shield: How rising temperatures could reshape life on the planet (businesstoday.in)

At the centre of this chain reaction is a deceptively simple concept: albedo. What is albedo — and why should we care? Albedo is a measure of how much sunlight a surface reflects back into space. Fresh snow and ice can reflect up to 90% of incoming sunlight. Oceans, by comparison, reflect less than 10%. This means that when bright snow and ice disappear, darker surfaces are exposed and absorb more solar energy. That creates a dangerous feedback loop: Higher temperatures → melting ice and snow → lower albedo → more absorbed sunlight → more warming. The planet effectively loses part of its natural cooling mechanism. NASA observations since 2000 have shown a declining trend in Earth's albedo. Estimates cited in the source material suggest that albedo loss has already contributed about 0.2°C of warming in recent years. Why a warmer planet is a problem for life The biggest concern is not simply that humans will experience hotter summers. Rising temperatures can disrupt the interconnected systems that make life possible. 1. Humans face greater heat stress: As average temperatures rise, heatwaves can become more frequent or intense. Extreme heat can affect the body's ability to regulate its temperature, increase pressure...