EnvironmentWood-eating beetles may make wildfires emit even more carbon When downed trees are attacked by beetles, the wood becomes more flammable, demonstrating another way insects can alter the risk of wildfires ¿ìè¶ÌÊÓÆµ
LifeSex may have evolved as a way to pool resources during tough times How sexual reproduction came about has long been a mystery, but an evolutionary model suggests it could have started with cells fusing to increase their food reserves ¿ìè¶ÌÊÓÆµ