Pollen may be widely disliked, but it is a living, essential part of plant reproduction, carrying genetic material through the air to create new growth across millions of ecosystems. As shifting weather, plant species and regional conditions reshape when and how pollen spreads, understanding its role can help explain both the rhythms of nature and the timing of your symptoms.

April’s monthly outlook is here, and some places are expected to be warmer than previously forecasted.

The Springs Fire near Lake Perris, which grew to more than 4,100 acres in a matter of hours, is now 95% contained following evacuations and school closures.

Storms across Afghanistan have left 77 people dead, 137 injured and 5,800 families affected. Widespread flooding, landslides and lightning strikes were triggered by heavy rain over the past 10 days — with damage to businesses, agricultural land, water wells and irrigation canals.

Travel conditions will be clear as we start the work week, but there could be some troubles later in the week. Here are some maps to track the weather ahead of your trip.