The foresummer has arrived, bringing hot and dry conditions to the desert. Despite the adverse conditions, many species are moving through the reproductive stage of their life cycles. Saguaro cacti are in full bloom – the flowers are especially beautiful at dawn and dusk. This year’s weather has been very favorable, with dozens of flowers…

Around the world, what determines the height plants grow to? Some places have trees a hundred meters high, while others are limited to annual plants shorter than a few centimeters. This range of variation is striking, but also important – canopy height helps us predict competition between species, ecosystem carbon and water fluxes, biomass accumulation,…