A latex surgical tube, connecting shoes of running people, can improve running efficiency by 6.4%. The tests were done exclusively with endurance running in mind. There were no tests of sprinters with their long strides and shorter race distances would derive benefits from this device. And, the running surface was consistently flat and level—so no …
PG&E is considering implementing Public Safety Power Shutoffs that may impact portions of 30 northern, central, coastal and Bay Area counties: Alameda, Alpine, Amador, Butte, Calaveras, Colusa, Contra Costa, El Dorado, Glenn, Lake, Mariposa, Mendocino, Napa, Nevada, Placer, Plumas, San Joaquin, San Mateo, Santa Clara, Santa Cruz, Shasta, Sierra, Solano, Sonoma, Stanislaus, Tehama, Tuolumne, Yolo …
Soil depletion due to climate change and unsustainable agriculture has reached crisis proportions in many regions of the world, where depleted soil results in falling crop yields, increasing food insecurity, and raises urgent questions about how current agricultural practices will feed 10 billion people by 2050. Micronutrient deficiency, a hallmark of degraded soil, is especially …
The quality of the air in the United States has improved substantially. Researchers from Carnegie Mellon University and Stanford have found that, US-economy-wide, gross external damage (GED) due to premature mortality has decreased by more than 20% from 2008 to 2014. The paper is published in Proceedings of the National Academy of Sciences (PNAS). Damages …
Analysis of 60 municipal smart city plans drawn from around the world has identified four different models: * an essential services model, * smart transportation model, * broad-spectrum model, and * a business ecosystem model. The combinations of smart city projects that are most often deployed together, and thus to define “archetypes” or “models” in …
Elon Musk indicates that SpaceX will for orbit with Starship as soon as possible after the 20-kilometer test. The timing is based upon building the increased number of Raptor engines. Three Raptor engines for the 20-kilometer flight Six Raptor engines for an orbital flight with an expendable Starship without cargo 30 Raptor engines for an …
Gravity Wave detections are rapidly increasing. The first gravity wave was detected in 2015. The science needed to accomplish this is described in the Veratasium videos below. They needed to create single wavelength lasers and use one-megawatt of power to detect differences of one trillionth of a wavelength. Gravitational-wave astronomy is a completely new way …
The gravity wave detections were in 2015 when Laser Interferometer Gravitational-Wave Observatory (LIGO) researchers detected the impact of two black holes. On October 1st, LIGO’s Hanford (LHO) and Livingston (LLO) detectors will temporarily halt observations to undergo a series of instrument upgrades and fixes. This kind of “commissioning break” sometimes occurs during LIGO’s long observing …
China is building new faster prototype maglev train line. China existing high-speed trains are almost all faster versions of conventional steel wheels on steel rail trains. China only has one 19-mile long high-speed maglev train line from Pudong to the Shanghai International Airport. China has the longest network of conventional high-speed rail in the world. …
