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The origin of life on Earth is one of the most complex puzzles facing scientists. It involves not only identifying the numerous chemical reactions that must take place to create a replicating organism, but also finding realistic sources for the ingredients needed for each of the reactions. One particular problem that has long faced scientists who study the origin of life is the source of the elusive element, phosphorus. Phosphorus is an important element for basic cell structures and functions. For example, it forms the backbone of the double helix structure of DNA and the related molecule RNA. Though the element was widespread, almost all phosphorus on the early Earth – around 4 billion years ago – was trapped in minerals that were essentially insoluble and unreactive. This means the phosphorus, while present in principle, was not available to make the compounds needed for life. ....
13 hot tech companies sold offshore: Did NZ benefit? 13 minutes to read This month has seen two substantial technology companies sold offshore, with Auckland-based retail software firm Vend going to NYSE-listed Lightspeed for $450 million, and Christchurch geologic 3D modelling outfit Seequent acquired by Nasdaq-listed Bentley Systems for $1.45b. Backers were quick to claim that jobs would stay in New Zealand (Vend and Seequent employ some 400 locally between them) and that investors like Movac and Punakaiki Fund (Vend) and Pencarrow (Seequent) would recycle money back into the local tech ecosystem. A look back at 13 past high-profile tech sales (from a field of many more) reveals that sometimes that happens … and sometimes it doesn t. ....
What happened to Mars s water? New study suggests most was trapped in underground rocks Posted TueTuesday 16 updated WedWednesday 17 MarMarch 2021 at 2:35am The early Martian environment (right), believed to contain liquid water and a thicker atmosphere, is a world away from the cold, dry environment of Mars today (left). ( Share Print text only Cancel Some 4 billion years ago, Earth and Mars were young, warm and wet. If they weren t Solar System twins, they were certainly siblings. Key points: Much of Mars s water has disappeared since the planet formed Planetary scientists suspect most was split into oxygen and hydrogen in the atmosphere, and the hydrogen lost to space ....