Tag: Sun

While roughly 99% of all ecosystems trace their energy back to solar power, some remarkable life forms thrive in total darkness, relying on a completely different process for survival. This article explores the definitive and exceptional answers to the question: is the main source of energy for living things?

A recent study indicates exposure to sunlight can significantly increase the production of the hunger hormone ghrelin. This finding provides a compelling answer to the common question: "Why am I hungrier at the beach?"

Recent research reveals a surprising connection between sun exposure and appetite, showing that exposure to ultraviolet (UV) radiation can increase hunger, particularly in men. This challenges the common assumption that heat suppresses appetite and offers new insight into the body's response to sunlight.

Spectroscopic analysis reveals the Sun contains iron, making up about 0.14% of its mass. This fact prompts the question, "Does sun give iron?"—a query that addresses a fundamental misconception in stellar physics, as the Sun is not a factory for this heavy element.

Over 99.9% of the energy consumed by living organisms on Earth, including humans, originates from the Sun. While we get immediate fuel from food, that food's energy can be traced back through ecological systems to the Sun's radiant power, answering the question: what is the ultimate source of most human energy?