Tijuana sewage has been spoiling the beaches and outdoor life of Americans in Imperial Beach and Coronado for decades. Our elite Navy SEAL special forces regularly train in these same polluted waters.

Ah yes, the age-old medical mantra: "The solution to pollution is dilution." Apparently, a few squirts of hypertonic saline in your kid’s nose can cut down cold symptoms and keep you from catching ...

It's been well established that virus transmission is much less likely to occur outdoors than in poorly ventilated indoor spaces. Can we estimate how much airflow is needed to make an environment safe ...