Flowers have gotten bigger due to climate change.

As the world warms, there is a shift towards earlier spring flowering plants. But now scientists have found that the flowers have also grown larger to attract endangered insect pollinators. Biologists have found that wild populations of morning glory in the southeastern United States have significantly increased in size in just 10 years - from 4.5 centimeters in diameter in 2003 to 4.8 centimeters in 2012. The changes were stronger at more northerly latitudes, where plants show more marked evolutionary responses to climate change. Scientists also noted the transition of morning glory to earlier flowering.