Photosynthesizing algae injected into the blood vessels of tadpoles supply oxygen to their brains

Leading a double life in water and on land, frogs have many breathing techniques — through the gills, lungs, and skin — over the course of their lifetime. Now scientists have developed another method that allows tadpoles to 'breathe' by introducing algae into their bloodstream to supply oxygen. The method provided enough oxygen to effectively rescue neurons in the brains of oxygen-deprived tadpoles.

Plankton head polewards

Ocean warming caused by anthropogenic greenhouse gas emissions will prompt many species of marine plankton to seek out new habitats, in some cases as a matter of survival. Researchers expect many organisms to head to the poles and form new communities — with unforeseeable consequences for marine food webs.

Big differences found in male and female jojoba plant sex genes

Hot desert sex has resulted in major genetic differences between male and female jojoba plants — one of only 6 percent of plants that require a male and female plant to reproduce. New research suggests male and female jojoba plants have diverged so much, that the jojoba plant has more novel sex genes than any other known living organism. The discovery may help researchers develop a DNA test to identify male and female jojoba plants, which cannot be distinguished from each other as seedlings – and shed light on how plants adapt to environmental stress.

Primates’ ancestors may have left trees to survive asteroid

When an asteroid struck 66 million years ago and wiped out dinosaurs not related to birds and three-quarters of life on Earth, early ancestors of primates and marsupials were among the only tree-dwelling (arboreal) mammals that survived, according to a new study.

Sweet corn yield gain over 80 years leaves room for improvement

New research shows sweet corn, when planted at high densities, has steadily increased in yield since the 1930s. The historical view underscores the importance of planting modern density-tolerant hybrids at their optimal densities, and suggests an opportunity to improve density tolerance even more.