How do plants make oxygen? Ask cyanobacteria

The ability to generate oxygen through photosynthesis—that helpful service performed by plants and algae, making life possible for humans and animals on Earth—evolved just once, roughly 2.3 billion years ago, in certain ...

Giant reed is a photosynthetic outlier, study finds

Arundo donax, a giant reed that grows in the Mediterranean climate zones of the world, isn't like other prolific warm-weather grasses, researchers report. This grass, which can grow annually to 6 meters (nearly 20 feet) in ...

Atmospheric oxygenation three billion years ago

Oxygen appeared in the atmosphere up to 700 million years earlier than we previously thought, according to research published today in the journal Nature, raising new questions about the evolution of early life.

Understanding how plants use sunlight

Plants rely on the energy in sunlight to produce the nutrients they need. But sometimes they absorb more energy than they can use, and that excess can damage critical proteins. To protect themselves, they convert the excess ...

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