Position your plant where it will get plenty of light but in summer move it out of strong sunlight as this will cause leaf ...

WHEN the late Dr. R. J. Lythgoe, of University College, London, about 1935, took up research on visual purple--the photosensitive substance of the retinal rods-our knowledge in this field had ...

New research has revealed the distribution of dark matter in never before seen detail, down to a scale of 30,000 light-years. The observed distribution fluctuations provide better constraints on ...