Oceans Are Getting Louder, Posing Potential Threats to Marine Life

Slow-moving, hulking ships crisscross miles of ocean in a lawn mower pattern, wielding an array of 12 to 48 air guns blasting pressurized air repeatedly into the depths of the ocean.

The sound waves hit the sea floor, penetrating miles into it, and bounce back to the surface, where they are picked up by hydrophones. The acoustic patterns form a three-dimensional map of where oil and gas most likely lie.

The seismic air guns probably produce the loudest noise that humans use regularly underwater, and it is about to become far louder in the Atlantic. As part of the Trump administration’s plans to allow offshore drilling for gas and oil exploration, five companies are in the process of seeking permits to carry out seismic mapping with the air guns all along the Eastern Seaboard, from Central Florida to the Northeast, for the first time in three decades. The surveys haven’t started yet in the Atlantic, but now that the ban on offshore drilling has been lifted, companies can be granted access to explore regions along the Gulf of Mexico and the Pacific.

Silicon Valley’s dirty secret: Using a shadow workforce of contract employees to drive profits

As the gig economy grows, the ratio of contract workers to regular employees in corporate America is shifting. Google, Facebook, Amazon, Uber and other Silicon Valley tech titans now employ thousands of contract workers to do a host of functions — anything from sales and writing code to managing teams and testing products. This year at Google, contract workers outnumbered direct employees for the first time in the company’s 20-year history.

It’s not only in Silicon Valley. The trend is on the rise as public companies look for ways to trim HR costs or hire in-demand skills in a tight labor market. The U.S. jobless rate dropped to 3.7 percent in September, the lowest since 1969, down from 3.9 percent in August, according to the Bureau of Labor Statistics.

Some 57.3 million Americans, or 36 percent of the workforce, are now freelancing, according to a 2017 report by Upwork. In San Mateo and Santa Clara counties alone, there are an estimated 39,000 workers who are contracted to tech companies, according to one estimate by University of California Santa Cruz researchers.

Spokespersons at Facebook and Alphabet declined to disclose the number of contract workers they employ. A spokesperson at Alphabet cited two main reasons for hiring contract or temporary workers. One reason is when the company doesn’t have or want to build out expertise in a particular area such as doctors, food service, customer support or shuttle bus drivers. Another reason is a need for temporary workers when there is a sudden spike in workload or to cover for an employee who is on leave.