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The problem for this group of killer whales is a dwindling food supply, scientists say. Most killer whales eat a wider diet, but this particular group of about 75 resident orcas eats just salmon, which have been overfished in the area for commercial consumption. Manmade contraptions, like hydroelectric power sources, block the salmons' path to release eggs.Exasperating the problem is that orcas do not have babies often or in large numbers, and when they do, it is a long process. It takes a calf a little under a year and a half to fully develop in the womb, and they nurse for another year. They must learn to swim right away, Balcomb said, and rely on their mothers for food for several years -- first through nursing, then through providing fish."Extinction is looming," Balcomb?told CNN last?month, but it is not inevitable if humans restore salmon populations and river systems in time. 895

The storm is expected to bring around a half-inch of rainfall to coastal areas on Thursday, anywhere from a half-inch to an inch to inland-valley areas, 1 to 1.5 inches in the mountains, and one-quarter to three-quarters of an inch in the deserts, forecasters said.Sunny skies are expected Friday, but temperatures will remain well below average because the region remains under a cold air mass, NWS meteorologist Miguel Miller said. 433

The sighting raised plenty of eyebrows across social media since the nearest In-N-Out restaurant is about 1,500 miles away.According to the New York Post, IG user Lincoln Boehm saw the wrapped sandwich and decided to take a photo. He told the Post that the burger sighting “genuinely shook me to my core.” 305

The registry is going to continue to follow all of our enrollees across time. So as the children become young adults and adults and later, we'll be able to follow up, he said. "Of course, there's always the potential for new emerging conditions." 246

The researchers weren't necessarily looking for this neutron star. Rather, it was happenstance as they searched for gravitational waves."At Green Bank, we're trying to detect gravitational waves from pulsars," said Maura McLaughlin, study author and Eberly Distinguished Professor of physics and astronomy at West Virginia University. "In order to do that, we need to observe lots of millisecond pulsars, which are rapidly rotating neutron stars. This is not a gravitational wave detection paper but one of many important results which have arisen from our observations."They were able to measure its mass because of a white dwarf companion star that warped the space around both stars. This warping acted as a way to accelerate the pulsar's pulses through space. They could learn the mass of the white dwarf and neutron star this way through the "Shapiro Delay.""Neutron stars are as mysterious as they are fascinating," said Thankful Cromartie, a graduate student at the University of Virginia and Grote Reber pre-doctoral fellow at the National Radio Astronomy Observatory in Charlottesville, Virginia. "These city-sized objects are essentially ginormous atomic nuclei. They are so massive that their interiors take on weird properties. Finding the maximum mass that physics and nature will allow can teach us a great deal about this otherwise inaccessible realm in astrophysics."Due to their mysterious nature, astronomers still want to answer more questions about neutron stars and this unique one could help them. They want to know if crushed neutrons become a type of "superfluid," what the breakdown looks like and where the actual tipping point lies when gravity takes over."The orientation of this binary star system created a fantastic cosmic laboratory," said Scott Ransom, study co-author and an astronomer at the National Radio Astronomy Observatory. "Neutron stars have this tipping point where their interior densities get so extreme that the force of gravity overwhelms even the ability of neutrons to resist further collapse. Each 'most massive' neutron star we find brings us closer to identifying that tipping point and helping us to understand the physics of matter at these mind-boggling densities." 2221