WHO says 99% of world's population breathes poor-quality air

The U.N. health agency says nearly everybody in the world breathes air that doesn't meet its standards for air quality, calling for more action to reduce fossil-fuel use, which generates pollutants that cause respiratory ...

UN sets 5-year goal to broaden climate early warning systems

The chief of the United Nations announced a project Wednesday to put every person on Earth in range of early weather-warning systems within five years as natural disasters have grown more powerful and frequent due to climate ...

Stem cells organize themselves into embryoid

Researchers at the University of Bonn have developed a method to generate embryo-like cell complexes from the stem cells of mice. The method provides new insights into embryonic development. In the medium term, it might also ...

The young plant's pantry does more than just feed it

The endosperm, the tissue surrounding the plant embryo in the seed, has long been perceived as a nourishing tissue that is abandoned once the transition to the seedling is complete. A Swiss team, led by scientists from the ...

page 5 from 15