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Breaking News: Scientists investigate dwarf planet's ring
Publicado em 10 de maio de 2019
Discovered in 2004, Haumea is a dwarf planet located beyond Pluto's orbit in a region of the Solar System called the Kuiper Belt. Pluto was demoted from the category of fully fledged planets in 2006 because of the discovery of Haumea and other dwarf planets.
Haumea was officially recognized as a dwarf planet in 2008. Its ellipsoidal shape resembles that of the ball used in rugby or American football. It has two moons and a ring. Because of its ring, Haumea is a member of a group of Solar [...]
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The Cerrado once connected the Andes with the Atlantic Rainforest
Publicado em 20 abril 2019The tropical forests of the Andes and Brazil's Atlantic Rainforest biome are separated by almost 1,000 km of drier areas with open vegetation in the Chaco, Cerrado (Brazilian savanna), and Caatinga (Brazilian semiarid) biomes. Today, these tropical forests are not connected, but the fact that they share closely related species and lineages suggests that these biomes were connected in the past. For example, 23 rainforest bird species have been found in both the Andean and Atlantic tropical [...]ver notícia -
Breaking News: New study switches from genetic to metabolic analysis to reconstitute evolutionary process - News Paper
Publicado em 22 setembro 2017A new method for analyzing a living being chemical compositions is tested in Andean plants and attest the genesis of species by means of geographic isolation. Scientists analyzed chemical compounds which express specific biogeographic trends in the evolutionary process, validating a Smithsonian hypothesis on the evolution of the genus Espeletia in the process. With 72 species currently identified, Espeletia is a plant genus endemic to the paramo, a moist alpine biome unique to the northern [...]ver notícia