I primi 10 worldsciencefestival.com competitors

worldscienceu.com

What are scientists looking for when searching for alien life? Could alien life develop in unimaginable ways? Astronomer and the founding director of Harvard’s Origins of Life Initiative Dimitar Sasselov examines the physical and chemical phenomenon of life as he looks outside our solar system to find the answers.‎‎‎

usasciencefestival.org

< Playlists Women in STEM Playlist Discover our Women in STEM video playlist! Click on a video thumbnail to unlock engaging lessons, career pathways,

sciencedaily.com

Parallel evolution is the independent evolution of similar traits, starting from a similar ancestral condition. Frequently this is the situation in more closely related lineages, where several species respond to similar challenges in a similar way. One of the most spectacular examples of parallel evolution is provided by the two main branches of the mammals, the placentals and marsupials, which have followed independent evolutionary pathways following the break-up of land-masses such as Gondwanaland roughly 100 million years ago. In South America, marsupials and placentals shared the ecosystem (prior to the Great American Interchange); in Australia, marsupials prevailed; and in the Old World the placentals won out. However, in all these localities mammals were small and filled only limited places in the ecosystem until the mass extinction of dinosaurs forty million years later. At this time, mammals on all three landmasses began to take on a much wider variety of forms and roles. While some forms were unique to each environment, surprisingly similar animals have often emerged in two or three of the separated continents. Examples of these include the litopterns and horses, whose legs are difficult to distinguish; the European sabre-tooth tiger (Smilodon) and the South American marsupial sabre-tooth (Thylacosmilus); the Tasmanian wolf and the European wolf; likewise marsupial and placental moles, flying squirrels, and (arguably) mice.

planetary.org

Our global collaboration work cultivates a worldwide movement for space. We engage our network of global members, volunteers, and partners, and harness…

briangreene.org

Brian Greene is a professor of physics and mathematics at Columbia University and the co-founder of the World Science Festival.

undsci.berkeley.edu

How science REALLY works...

edinburghscience.co.uk

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