Survival of the Friendliest
Nautilus
Once a species dies out, it's lost to us forever. Or is it?
With advances in genome sequencing and computational tools to analyze genomic information, researchers are able to estimate that about 8 percent of the human genome is made of sequences that originated as invasive retroviruses. To put that number in perspective, genes make up about 1 percent to 1.5 percent of your genome.
Its complex politics and vibrant music have attracted the attention of the world. But Cuba, the largest island nation in the Caribbean, is also home to the unexpected. It’s a place of stunning contrasts: mysterious caves and bright boulevards, sweltering fields and cool forests, hard challenges and high energy.
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