Evolution’s Most Effective Killer - Snake Venom: As predators, snakes are missing a few key attributes. They have no legs to chase down their prey, no paws to knock down quarry, and no claws to hold their victims. But none of these deficiencies matters much, because evolution has handed snakes the ultimate weapon: venom. With it, the several hundred types of venomous snakes can kill or debilitate before their victims escape. [Popsci]
Comb jellies were our first ancestor: Instead, it reveals that our true ancient ancestor, which emerged more than 600 million years ago, was the comb jelly or Ctenophore - common and extremely fragile jellies with well-developed tissues - which appear to have diverged from other animals even before the sponge, which has no tissue to speak of. [Telegraph]
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