At the U.N.'s Second World Climate Conference, scientists highlight the risks of global warming to nature and society.

1958 - American scientist Charles David Keeling starts measuring CO2 levels over Hawaii's Mauna Loa Observatory, resulting in the "Keeling Curve" graph that shows CO2 concentrations rising.

American scientist Charles David Keeling starts measuring CO2 levels over Hawaii’s Mauna Loa Observatory, resulting in the “Keeling Curve” graph that shows CO2 concentrations rising.

we looked at how CO2 levels in Mauna Loa, Hawaii, have changed from 1958 to 2024. We found that CO2 levels have been going up a lot, which is mostly because of human activities. The graphs we made ...

Mauna Loa Road in Hawai‘i Volcanoes National Park will temporarily close to all use when survey, drilling and soil sampling work starts today. Mauna Loa Road from Highway 11 to Kipuka­puaulu ...

Mauna Loa Road in Hawaii Volcanoes National Park will temporarily close to all use when survey, drilling and soil sampling work starts Monday. Mauna Loa Road from Highway 11 to Kipukapuaulu ...

Mauna Loa is the world's largest active volcano when measured from the ocean floor to its peak, and scientists have warned that it is due to erupt. Situated in Hawaii, Mauna Loa is one of Earth's ...

A magnitude 4.8 earthquake shook the southeastern flank of Mauna Loa volcano on Hawaii island overnight, the U.S. Geological Survey said today. The quake struck at about 1:42 a.m and was centered ...