After more than 130 years of being tied to the measurement of a specific metal cylinder's mass, the kilogram has been redefined in terms of the Planck constant, a number without variance that's central to quantum physics. The change, which takes effect May 20, is intended to streamline research and development pertaining to extraordinarily precise mass measurements.
Electric power is far from the constant in may appear to be. Three big trends include the transition from coal to natural gas, allowing for two-way power flows and the ability to please customers through the use of digital technology.
A transparent window coating developed by mechanical engineers at MIT could reduce reliance on air conditioning, decrease greenhouse gas emissions and slash cooling costs. The coating reflects up to 70% of the sun's heat.
Decades more work will be required to deal with sediment flow from Mount St. Helens into the Cowlitz River, per the Army Corps of Engineers. One of the main concerns is that shipping berths on the Columbia River waterfront may be blocked by the continued flow of volcanic sediment.
New Orleans is sinking even faster than the surrounding waters are rising, creating an urgent situation for Louisiana if it hopes to preserve the city and coastal areas, Susan Buchanan writes. The state's regularly updated 50-year, $50 billion Coastal Master Plan with hard and green solutions is making progress, but some argue that more is needed, as well as more funding.
The fate of Southern California's Buena Vista Lagoon hangs in the balance, as the San Diego Association of Governments will consider a restoration plan next week. A number of issues have hampered previous efforts, but a new report offers four possible ways forward, including a proposal to remove a weir and adjust the inlet and channel to allow tides to flow in and out.
Discussion of a disputed conservation initiative in California's Napa Valley was dodged as planning commissioners reviewed regulations governing streams, woodlands and reservoirs that provide drinking water. The missing initiative, Measure C, would also protect watershed and oak woodlands.
Gamma spectroscopy detectors have been delivered to Egypt and Senegal to help assess and address their severe soil degradation. The devices, provided through the International Atomic Energy Agency's technical cooperation program, will help pin down the degradation's contributing factors, which can include land exploitation, unsustainable agriculture and extreme weather.
Sediment and pollution flowing from rivers in the Australian state of Queensland are threatening the health of Moreton Bay, a major tourist attraction. The problem is compounded by a careless attitude among residents who appear to have expressed little interest in cleaning up area waterways, including the Brisbane River.
Learn how to "Make a Difference by Loving What You Do" from the IECA Annual Conference keynote speaker, Kenneth MacKenzie, PE. MacKenzie who is the Executive Director of the Urban Drainage and Flood Control District in Denver, will dive deeper into not necessarily doing what you love, but learning what it takes to love what you do. Register now to remember why you love what you do.
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