Visualizations
Temperature readings from the Merrimack River, collected by the Merrimack River Water Quality Council, the National Park Service, and students from the Lowell and Lawrence publi...
Last Modified 1264 days 10 hours 18 minutes ago
Last Modified 1317 days 8 hours 57 minutes ago
Most had a rise in temperature of 3 to 5 degrees C.
Last Modified 1341 days 7 hours 22 minutes ago
Most had a rise in temperature of 3 to 5 degrees C.
Last Modified 1341 days 7 hours 22 minutes ago
This timeline shows the projected growth in shale gas production made possible by technologies such as hydraulic fracturing.
Last Modified 1397 days 8 hours 58 minutes ago
This is a 0.32m pendulum timed for 20 seconds, yielding 18 or 19 swings.
Last Modified 1406 days 22 hours 41 minutes ago
This is a 0.5m pendulum for a 20 second run, yielding 14 swings.
Last Modified 1406 days 22 hours 43 minutes ago
This is a 0.82m pendulum timed for 20 seconds, yielding 11 swings.
Last Modified 1406 days 22 hours 45 minutes ago
Last Modified 1435 days 12 hours 11 minutes ago
Last Modified 1435 days 13 hours 19 minutes ago