We keep developing new dangers for ourselves to have to deal with in order to continue to survive. For instance, electricity, smoking in bed, plugging in too many Christmas lights, pulling a poorly-secured TV onto your head when you’re a toddler, finding your dad’s gun, being careless around large machines — so much of our technology can kill us (or our children) if we don’t adapt to deal with it.
Meanwhile, we’ve sort of slowed down our biological/genetic evolution with our medical technology and our having such large populations that don’t really undergo the same kinds of bottlenecks you’d see in earlier humans with smaller populations, so much of our evolution takes place intellectually and technologically instead. That is, we are evolving through what we create and not necessarily as much within our own bodies.
It’s an interesting effect in that it’s sort of like evolving these spinning bone blades on your shoulders that you have to learn to avoid by not leaning the wrong way or they’ll take your head off.