Low levels of estrogen hormones in water may be responsible for the feminization of wild fish, according to a recent study. Researchers found that very low concentrations of estrogenic compounds released from sewage treatment plants were causing intersex and altered sex ratios in aquarium fish.
Research suggests that seawalls may have no significant long-term effect on beach behavior, despite causing active erosion during storms. Geologists consider factors such as sediment transport rates and beach erosion to determine net long-term erosion.
A four-year interdisciplinary study has identified young faults at the Oracle site and pinpointed the emissions responsible for the Pythia's trance state as light hydrocarbon gases from bituminous limestone. The study also found ethane, methane, and ethylene in spring water near the Oracle.
The Suquamish and Port Gamble S'Klallam tribes are working together with geologists to manage water quality through a long-term approach. They have established staff gauges and monitoring wells, as well as implemented wetland protection programs and watershed studies to protect their water resources for at least seven generations.
The Geological Society of America is hosting press briefings during its annual meeting in November 2000. The events will feature presentations from experts on topics such as landslides and slope-stability problems related to gas hydrates, the Walker Lane transform plate boundary, and planetary science research. The meetings are open to...
The 112th Geological Society of America Annual Meeting featured keynote speakers and symposia on planetary exploration, gas hydrates, and tectonics. The meeting included presentations from renowned scientists on topics such as sample returns from asteroidal material and the structure of planets and satellites.
The Geological Society of America will hold its 112th annual meeting in Reno, Nevada, from November 13-18. The event features eight Pardee Keynote Symposia and a record number of technical sessions covering topics such as active tectonics, oceanic island volcanism, and environmental geoscience.
Researchers have found no evidence of gradual dinosaur extinction but rather a catastrophic event. Scientists also explore the formation of the Hawaiian volcanic Island of Hilo Ridge, which challenges previous theories on its origin.
Researchers present findings on the geological evolution of the North American Cordillera, including the Cascadia subduction zone's impact on earthquake hazards. They also explore tectonic movement and its implications for densely populated areas in the Pacific Northwest.
The South Central Section of the Geological Society of America will explore the effects of animal waste on groundwater quality. Scientists will present studies on the survival rate of bacteria in groundwater, hydrogeologic investigations revealing interbasin recharge's impact on nutrient loads.
The Northeastern Section of the Geological Society of America will address regional geoscience news on climate change, coastal hazards, and extinction events. Papers will explore links between climate change and ocean-atmosphere forcing, as well as the impact of sea-level changes on coastal communities.
The Geological Society of America 1999 Annual Meeting features sessions on geological hazards, climate change, planetary science and Mars exploration. Keynote speakers will discuss the impact of earthquakes, greenhouse conditions and environmental consequences of impact events.