Two signaling molecules — strigolactone and ethylene — can work independently to begin the process of leaf senescence.
The engineering marvel that is the giraffe, long neck and all, was intelligently designed.
Elemental zinc pulls together multiple themes that biologist Michael Denton writes about in his new book.
I asked the gardener how come, after all these years, the soil in my geranium pots is at roughly the same level.
Is there something adaptive to the enjoyment of colors in such a wild mix; and in our enjoying it at one particular time of the year?