The new Krakatoa broke the surface in the early 1920's and is now taller than the old volcano...
The 1889 Krakatau eruption didn't have much of a negative impact on the world at all.
It was simply the local tsunami that killed a lot of people in the immediate area.
Anak Krakatau has also erupted 38 times since 1927 without erupting catastrophically, either, so non-catastrophic eruptions from it are routine.
Krakatoa 2 is coming!