By HENRY FOUNTAIN
The arch has been built to last 100 years without the sort of maintenance that most structures require.
Published: April 27, 2016 at 02:00AM
from #NYT Science Read the full article here: https://ift.tt/24hQg4n
via IFTTT
By HENRY FOUNTAIN
The arch has been built to last 100 years without the sort of maintenance that most structures require.
Published: April 27, 2016 at 02:00AM
from #NYT Science Read the full article here: https://ift.tt/24hQg4n
via IFTTT