Tag Archives: Flowers and Plants

When territorial animals are confronted by intruders, they instinctively protect their turf — no matter how small. For warty birch caterpillars, that means patrolling one of the tiniest territories on Earth: the tips of birch leaves. Scientists observed the caterpillars warding off intruders with loud vibrations that advertise they are in command of a domain that stretches a few millimeters …

The silent season is drawing to a close. All winter, there was little birdsong to lift my heart. The occasional caw of a crow, the chickadee-dee-dee of a chickadee, the big song of the little Carolina wren that now stays on our Pennsylvania farm all winter. But no courtship call of great horned owls, no wood thrush or Baltimore oriole. …

The steep trail near the top of the Palm Springs Aerial Tramway was covered in inches of spongy fallen needles and peppered with ankle-twisting pine cones. It was also shady, which felt remarkable after the first seven miles of the grueling Cactus to Clouds hike offered little more than a brittlebush leaf’s worth of relief. I had already hiked up …

Mycorrhizal fungi are the supply chains of the soil. With filaments thinner than hair, they shuttle vital nutrients to plants and tree roots. In return, the fungi receive carbon to grow their networks. In this way, 13 billion tons of atmospheric carbon dioxide — one-third of fossil-fuel emissions worldwide — enter the soil each year. These fungi cannot live on …

The vast majority of plants are hermaphrodites, with both male and female reproductive parts. Oaks, some orchids, the potted spider plant in your office — they’re all capable of reproducing without a member of another sex nearby. “It makes sense if you are an organism that can’t run around and find mates,” said Deborah Charlesworth, a population geneticist at the …

Flower mites spend their lives slurping nectar and nibbling pollen in flowers throughout the tropics. To travel from one blossom to another, these tiny, eight-legged creatures hitch rides on the beaks of hummingbirds, taking shelter in the birds’ nostrils during flight. When a speedy hummingbird arrives at a flower to drink nectar, mites run toward its beak to get onboard …