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China s Sky Eye super telescope discovers 201 pulsars Deng Xiaoci and Wan Lin Published: May 20, 2021 12:10 PM The 500-meter aperture spherical radio telescope (FAST) sits in the middle of mountains Photo: Xinhua
The 500-meter aperture spherical radio telescope (FAST), also known as China s Tianyan or Sky Eye, has discovered 201 pulsars, including some faintest pulsars, 40 millisecond pulsars, and 16 pulsars in binaries. The discoveries were published on Thursday in Research in Astronomy and Astrophysics. Located in Pingtang county, Southwest China s Guizhou Province, FAST was completed in 2016 and is the world s largest single-aperture radio telescope. Pulsars are a compact remnant left behind after bright massive stars die. They have the strongest magnetic fields, highest density, and fastest rotation in the universe, and show significant relativistic effect in a system of binary compact stars, the Global Times learned from China s National ....
One Berkeley Resident s Fight to Desegregate the City Dorothy Walker has spent decades working to eliminate housing discrimination. In February, the city council finally agreed. April 1, 2021, 9am PDT | Diana Ionescu | Nathanael Johnson profiles Dorothy Walker, a Berkeley resident who, decades ago, undertook a fight against racist real estate covenants. As a white woman married to a Japanese-American, Walker witnessed the effects of internment and race-based policies in mid-century America, policies which reverberate to this day. Despite federal efforts to eliminate housing segregation in the early 20th century, writes Johnson, cities found new ways to replace explicitly racist covenants with ordinances that entrenched segregation by income and wealth instead, reserving certain parts of town for people who could afford their own house and a roomy yard. Walker has proposed eliminating single-family zoning for decades, but her proposals have always fallen on d ....
A proposed package of reforms working through the Connecticut Legislature would loosen zoning codes in a state traditionally committed to single-family zoning. ....
Density, Affordability, and the Hungry Dogs of Land Price Speculation Patrick Condon argues that increasing density without affordability inflates urban land values, resulting in nearly all of the value of labor and creative enterprise of entrepreneurs in regional economies being absorbed as land wealth. March 15, 2021, 11am PDT | Clare Letmon Share Sick City: Disease, Race, Inequality, and Urban Land, author Patrick Condon, chair of the Urban Design program at the University of British Columbia, harkens back to 19th century political economist Henry George to argue that increasing density without affordability inflates urban land values to the benefit of speculators, resulting in nearly all of the value of individual labor and creative enterprise of entrepreneurs in regional economies being absorbed as land wealth. ....