This week, scientists solve the mystery of the missing volcano.

How could you have this major eruption that had this major effect on global climate?

And where was it in the ice core record? It just didn't make any sense.

And we can treat HIV pretty well in trials. Why not in real life?

You run into all kinds of barriers that you don't take into account when you're doing the size.

Plus the geologists who are on call when quakes happen.

This is the Nature Podcast for July 9th, 2015. I'm Kerry Smith.

And I'm Adam Levy.

Now first to those quake watchers,

Noah Baker has been finding out how a group of geologists raised the alarm when a huge quake struck Nepal earlier this year.

On the 25th of April, the ground started to shake in Nepal.

This would be one of the most devastating earthquakes to hit the region in a generation.

On the other side of the world in the USA, seismologist Gavin Hayes woke up.

I received the call, as has happened frequently for large earthquakes around the world.

I got up and went to my computer and logged in to see the earthquake and to start working on.

Gavin works for the National Earthquake Information Center or NEIC in Colorado.

We respond to global earthquakes, so we have a mandate from the US government to provide information about where and how big earthquakes are

both domestically and around the world and to provide information not just about the size how big earthquakes are both domestically and around the world.

And to provide information not just about the size of those earthquakes,

but the impact that those events might have on population and infrastructure.

From the second the quake begins, data from seismology stations around the world

rush into the NEIC via satellite, and the race is on.

...