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Articles by Ellen Hall
Before Brita: A Brief History of Water Filtration
The icon indicates free access to the linked research on JSTOR. In April 2024, the United States Environmental Protection Agency (EPA) introduced the first-ever national drinking water standards to monitor the presence of per- and polyfluoroalkyl substances (PFAS) in drinking water. The decision came in light of research tying PFAS exposure to cancer, thyroid dysfunction, and other ailments.
History of the GNSS industry and milestones ahead - GPS World
Ellen Hall, president & CEO, Spirent Federal Systems The history of GPS is fascinating. In 1957, a study by JHU’s Advanced Physics Laboratory (APL) utilized the Doppler effect to monitor the recently launched Sputnik, allowing researchers to pinpoint the satellite’s position. This endeavor led to the development of the Navy Transit program, the first satellite navigation system, which was successfully testing in 1960.
Why Conservative Communities Are Coming Around on Climate Change
For many people, whether they accept the existence or seriousness of climate change is not so much about science as it is about identity. People define themselves in large part by the social or political groups they belong too – which means Americans who identify as conservative Republicans tend to express less concern about climate change and are more supportive of Trump’s climate policies than other Americans.
Stories for the Week of April 28 - May 5
Every Friday, Blessed Tomorrow releases the top faith and climate stories from the previous week. We highlight achievements in climate solutions and effective climate communications from to people of faith. We feature helpful tips and strategies for you to implement in your faith community and stories to inspire everyone. We’ll also let you know about upcoming events in the faith and climate community. This week in faith and climate news…
American Leaders to Trump: U.S. Must Look Forward, Not Backward on Climate Change
President-elect Donald Trump has pledged to reverse much of the progress our nation has made on climate. His recent appointment of Oklahoma Attorney General Scott Pruitt, a fierce critic of the Environmental Protection Agency, to be the EPA’s administrator is a clear indication he intends to follow through on that plan.
Why Climate Equity Is More Important Than Ever
The results of the Presidential election took a lot of us by surprise. Political analysts will be parsing the outcome for weeks, but one thing is abundantly clear: a sizeable number of Americans have been feeling marginalized and abandoned. Climate advocates must be careful not to make the same mistake. Whatever our president-elect may believe, climate change is happening now.
New Record: 65% of Americans Accept That Climate Change Is Caused by Human Activity
The U.S. may have reached an important tipping point for climate action. According to a new Gallup poll, concern about climate change is at its highest level in eight years, with 64 percent of respondents saying they worried “a great deal” about the warming planet.
Munich, Bavaria Travel Guide
Stay in the heart of Central Stay in the heart visit for leisure, business, sightseeing tours,and shopping, Cultural, castles, rivers, lakes and castles, events , beerfest,nightlife and all your other interests. This property is located only 250 meters from Central Station. Rooms with free Wi-Fi. and Internet equipped and free parking.
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