Thousands of people are missing and hundreds are dead after a flash flood in Nepal that struck with little warning earlier this week.
Why it matters: The flood is exposing the gaps in warning systems that are designed to watch out for extreme rain and rivers — not for sudden collapses high in the mountains during good weather.
This year's tick season has been a doozy — and another peak is coming in the fall.
Why it matters: Tick bites can pose serious health risks, transmitting pathogens that cause illnesses including Lyme disease and triggering alpha-gal syndrome, an allergy to red meat.