when photosynthetic cyanobacteria lived symbiotically within other primitive cellular organisms. “To our knowledge, this is the first time that photosynthetic electron transport has been ...

Scientists say they have discovered the oldest evidence of photosynthesis ... Scientists believe cyanobacteria is responsible for so much oxygen developing in Earth's atmosphere millions of ...

As early as 3 billion years ago, cyanobacteria, which are capable of photosynthesis, started growing. It is thought that these bacteria evolved because of photosynthesis. The Earth was 5 billion years ...

indicate photosynthesis has been around for even longer than that. It is widely believed that cyanobacteria drove the accumulation of oxygen in Earth’s atmosphere 2.4 billion years ago.

This process, called photosynthesis, is fundamental to almost all life on Earth. Primary producers (plants, most familiarly, but also algae and cyanobacteria) use it to make their own food ...