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Perhaps it’s the biggest question science has left to answer, how did life begin? Now, molecular biologists in Cambridge university have discovered tiny molecules of RNA which they say might provide some clues. Science journalist and author Philip Ball explains what we know and whether we’ll ever find the origins of life on earth.
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"Competition can create innovation, but if there's a narrower focus on national interest and on establishing ownership, then you can lose sight of the bigger picture which is exploring the solar system and beyond," he adds.