National Park Service areas, by mission, are to preserve and protect resources unimpeded for the future of generations yet unborn.  Hardened border walls severely impede these areas by negating movement of species within adjoining ecosystem areas in the U.S. and Mexico. Species impacted include flora and fauna, large and small, as small as the monarch butterfly.  Critical access to springs and sheltered environments will be affected. Collection and use of natural materials by the Tohono O’Odham and movement within their territorial boundary will be affected or lost.

Trump has blasted the impeachment inquiry, arguing that he did nothing wrong and accusing Democrats of launching a politically motivated “witch hunt.” Lawmakers in the Democratic-led House of Representatives are investigating concerns that Trump’s actions have jeopardized national security and the integrity of U.S. elections. The impeachment inquiry has cast a new pall over Trump’s presidency just months after he emerged from the shadow cast by Mueller’s investigation.

Chennault could not get only fighter pilots, so many of his recruits, like Gregory “Pappy” Boyington, of later Black Sheep Squadron fame, and Charles Bond, came from units flying other types of aircraft — bombers. Also to be discussed were descriptions of how the Tigers were supposed to fight in the air, using the P-40 to get its best results against the Japanese fighters. Generally, this involved using diving attacks to get a speed advantage and to avoid turning fights with the nimbler Zero.

To ensure global food security and sustainable food practices in an ever-growing world, we need to reexamine our food systems and take regional resources, such as land and water availability, as well as local economies and culture into account.  To start, the United States and other developed countries must encourage food companies to produce more sustainable food, including more plant-based options, and educate consumers and retailers about healthy and sustainable diets.

Despite the fact that cannabis was a widely distributed medicine with MDs writing more than 3,000,000 prescriptions per year in the 1930s, it became prohibited at the federal level in the United States in 1937. That prohibition was continued via the Controlled Substances Act in 1970 with cannabis placed firmly in the Schedule I category, which is where it has remained since. The decision to place cannabis in the Schedule I category was not based on science.

Before then, the Immigration and Naturalization Act of 1965 eliminated national origin quotas but set worldwide limits on the number of persons that could migrate to the U.S. This act is likely one of the biggest causes of the “hispanization” of North America because it established a system of family-based and employment-based preference for issuing visas. It was the driving force behind the enormous influx of immigrants from Mexico and Central America during the 70s and 80s, a period that is considered the crux of Latin American immigration. 

The particular preferences people stand by tend to be very idiosyncratic, Bronnenberg notes. “It’s not that all consumers stick with their coffee preferences but migrate their preferences for sugar or pasta sauce,” he says. “I think it’s that you have some favorite things that you yourself find important, and you stick with those preferences, and others you don’t.” A certain kind of pancake mix may be nearer and dearer to your heart than, say, the kind of syrup you squirt on top of it.

Yet many people assume all sharks are alike and equally likely to bite humans. Consider the term “shark attack,” which is scientifically equivalent to “mammal attack.” Nobody would equate dog bites with hamster bites, but this is exactly what we do when it comes to sharks. So, when a reporter calls me about a fatality caused by a white shark off Cape Cod and asks my advice for beachgoers in North Carolina, it’s essentially like asking, “A man was killed by a dog on Cape Cod. What precautions should people take when dealing with kangaroos in North Carolina?”

But then the conversation drifted to our future in space. They, too, felt that the end of the Space Shuttle program could have been a finale of sorts. But as you walk around the exhibits of the museum, you realize that there have been many near-death experiences for NASA. Those include two failed shuttle flights and the deadly Apollo 1 fire in 1967. The program always bounced back. The space veterans argued about resources. Can we go to the moon and Mars? No, and there's no real reason to return to the moon, they both agreed.

 “Measles is like a canary in the mine,” says Heidi Larson, director of the Vaccine Confidence Project and a professor of anthropology at the London School of Hygiene & Tropical Medicine. To protect a population from measles, she says, at least 95 percent of people need to be vaccinated – a higher threshold than for most other infections. This means that if vaccination rates start falling, “it’s going to be the first to show its ugly head.