How to track a shark

An international team of researchers has compiled a massive dataset that overlays years’ worth of information on the position, migration and interaction of sharks and game fish. This research has immediate relevance for anglers, who have been reporting…

Solar cell keeps working long after sun sets

Researchers have constructed a photovoltaic cell that harvests energy from the environment during the day and night, making use of the heat leaking from Earth back into space. At night, solar cells radiate and lose heat to the sky, reaching temperature…

Botany: Fitness needs the right timing

Life on Earth runs in 24-hour cycles. From tiny bacteria to human beings, organisms adapt to alterations of day and night. External factors, such as changes in light and temperature, are needed to entrain the clock. Many metabolic processes are control…