Beyond Neptune, a newer class of smaller worlds called dwarf planets reign, including longtime favorite Pluto. NASA's New Horizons spacecraft visited there in 2015, and is currently exploring the Kuiper Belt beyond Pluto. Thousands more planets have been discovered beyond our solar system. Scientists call them exoplanets (exo means "from outside". | #Planet

Allergies, asthma, and infectious disease outbreaks will become more common due to increased growth of pollen-producing ragweed, higher levels of air pollution, and the spread of conditions favorable to pathogens and mosquitoes. | #Global worming

Every type of flower plays its part. Flowering shrubs and long-lived perennials form a low-maintenance foundation, while annuals sure are a delight even though we know we'll have to replace them every year. Flowering vines can take a garden to dazzling heights, but we need humble ground covers too to cover the bald spots. And, finally, the differing light needs of full-sun flowers and shade-loving gems ensure no spot in your garden goes without color. Just don't forget your pollinator friends—there are so many options that will attract bees, butterflies, and hummingbirds to your garden haven. | #Flowers