First Land Plants and Fungi Changed Earth's Climate, Paving the Way for Explosive Evolution of Land Animals, New Gene Study Suggests Eberly College of Science Thinking about Doing a Plant Based diet? Article The United States Army Air Plant filled Hanging Glass Globe Snake Plants produce oxygen at night using backward photosynthesisthey're one of only 6% of plants with CAM metabolism. NASA measured them producing oxygen at 5 normal rates during darkness. Each 18 inch leaf