Insect eggs deposited on plants constitute a threat that has led to the evolution of sophisticated defenses. The interactions between insect and are governed by diverse variety chemicals inform butterflies about suitable hosts, repel gravid females, alert presence an egg, act as signal molecules induce defenses, directly impair egg development, indirectly attract parasitoids. In recent years, s...

Depletion of fossil resources, global warming, and increasing world's population represent major Damocles' sword for humanity to ensure its future against famine, climate change, the end petroleum era. Solutions will come from production plant-based chemicals, which is not new, nor a historical artifact. On earth, 99% biomass alive composed plants microorganisms. Because this biodiversity, it c...

Justus Liebig was one of the individuals making chemistry almost a German monopoly in the 19th century. At Giessen he established the first organic chemistry laboratory and offered a systematic course for training new chemists. His comprehensive survey of plant nutrition changed the nature of scientific agriculture. In a study of animal chemistry, Liebig treated physiologic processes as chemica...

Contributions in the field of soil chemistry have immensely benefited humankind, including enhanced agricultural production and the quality of our environment. This review focuses on research breakthroughs since the mid-1970s and delineates frontiers in soil chemistry for the upcoming decade. However, early contributions in ion exchange, sorption phenomena, and soil acidity are highlighted. Beg...