The U.S. and China are leading the G20 in efforts to develop hydrogen fuels, according to new research from the University of ...

The Group of Twenty (G20) comprises 19 countries (Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Republic of Korea ...

Two white butterflies are flying over countries and continents ... The world map came up a year ago, as part of a much larger ...