Carbon dioxide, essential for life on Earth, makes up less than 0.039% of the Earth's atmosphere. We need more of it: Svante Arrhenius (1859-1927). (Via: Watts Up With That?)
He eventually made the suggestion that an increase in atmospheric carbon dioxide due to the burning of fossil fuels could be beneficial, making the Earth's climates “more equable,” stimulating plant growth, and providing more food for a larger population. This view differs radically from current concerns over the harmful effects of a global warming caused by industrial emissions and deforestation.