Small spikes in the magnetic field in our solar system may reveal dust and debris, including some on a collision path with Earth, according to a researcher at the European Geosciences Union (EGU) General Assembly in Vienna, Austria.
The solar wind, which consists of charged particles flowing at high speed from the Sun, creates a magnetic field detectable from interplanetary space probes. Planetary scientist Christopher Russell of the University of California in Los Angeles and his colleagues have been examining small wrinkles in that magnetic field called interplanetary field enhancements (IFEs) since the 1980s. At an EGU session on 13 April, Russell presented the latest evidence that it might be possible to use IFEs to detect asteroid-orbiting clouds of dust and rock, including some that threaten Earth.
A century ago, Panama beat out Nicaragua to snag one of the biggest engineering projects of the age: a U.S.-backed canal that would link the Atlantic and Pacific oceans, creating a shorter trade route between East and West. In 2014 — the 100th anniversary of the Panama Canal’s completion — Nicaragua made plans for its own interoceanic linkage, which would be triple the length of Panama’s. If completed, the project could break Panama’s long- standing monopoly on the shipping trade in the region — but at a severe ecological price.
Outside Ixtlán de Juárez, Mexico, a sign warns visitors that “In this community, private property does not exist. The purchase and sale of communal lands is prohibited.” Lucas Laursen.
Peter Bloom of Rhizomatica shows off the signal strength on a handset outside of Talea de Castro, Mexico. December 2014. Lucas Laursen.
Talea de Castro, Mexico. December 2014. Lucas Laursen.
Talea GSM’s antenna in December 2014. Lucas Laursen.
Talea GSM’s antenna in December 2014. Lucas Laursen.
IN THE cloud forests of the Sierra de Juárez mountains in southern Mexico, a new kind of tree is springing up: the mobile telephone mast. Unlike most phone masts in the world these are installed, owned and operated by small, mostly indigenous communities. Providing a mobile service in these villages was not profitable enough for big telecoms companies to bother with, unless the locals stumped up $50,000. But improvements in software and the falling price of hardware has made it possible to build a local mobile-phone base station for around $7,500, which non-profit operators and small communities can muster. Continue reading DIY Telecoms→
U.S. regulators have been attempting to deal with the negative affect that a few large Internet providers might have on competition. Meanwhile, elsewhere in the world, new mobile technologies have been encouraging competition.
Yesterday, at Mobile World Congress in Barcelona, Spain, the chairman of the U.S. Federal Communications Commission, Tom Wheeler, promoted the net neutrality rules that the FCC recently voted to adopt, and bragged that the U.S. would “continue to be the world leader” in high-tech telecommunications. The FCC’s rules would prevent Internet service providers (ISPs) from prioritizing certain content. Critics say such “fast lanes” would undermine the principles that have led to online innovation (see “FCC Chief Proposes Broader Net Neutrality Rules”). Continue reading Peer-to-Peer Wireless Is Increasing Competition Worldwide→
Journalist covering global development by way of science and technology.
