The complete online text of Effects of Cross and Self Fertilisation in the Vegetable Kingdom by Charles Darwin.

Charles Robert Darwin is credited with popularizing the concept of organic evolution by means of natural selection. Though Darwin was not the first naturalist to propose a model of biological evolution, his introduction of the mechanism of the "survival...

Charles Robert Darwin is credited with popularizing the concept of organic evolution by means of natural selection. Though Darwin was not the first naturalist to propose a model of biological evolution, his introduction of the mechanism of the "survival...

One of the most influential scientists of the nineteenth century, Darwin is best known for establishing the theory of organic evolution by natural selection. Darwin was born in Shrewsbury, England, the son of a respected physician. He was the grandson of...

The social identity theory proposed by H. Tajfel and J.C. Turner that individuals are encouraged to conduct ingroup-favoring intergroup comparisons to heighten social identity and self-esteem was examined. Forty-nine British undergraduate students were asked to perform a public goods task in which certain group...

The declining trend in fertiliser consumption in the UK is likely to continue for the next few years. In a review of fertiliser usage and consumption over the past four years, reported in ASI, the UK Fertiliser Manufacturers Association (FMA) foresees little change....