or when we cross
Lancaster Avenue near Villanova.
We've seen this when
the Mississippi River floods.
We've seen this in hurricanes
like Harvey, Katrina and Sandy.
We saw this this summer in Isaias,
and we will see this again.
This is a challenge that unites us.
And these are challenging times,
but they're interesting times.
Sir Isaac Newton said,
"If I've seen further,
it's because I've stood
on the shoulder of giants."
And from the shoulders of giants,
we can see the world
like we've never seen it before.
This is an image taken
by the astronauts of Apollo 17.
They were some of the first
to see our whole Earth.
Our beautiful lonely planet
had just been revealed.
By 2029, 57,000 satellites
will orbit our planet,
generating hundreds of terabytes
of Earth data every single day.
We are alive in the data revolution.
Data is being generated constantly,
not only through satellites,
but gauges and sensors,
through our own actions,
just using our cell phones.
Scientists and engineers are learning
how to harness this information
to gain novel insights
into how floods work