Genetic engineering is the act of modifying the genetic makeup of an organism. Modifications can be generated by methods such as gene targeting, nuclear transplantation, transfection of synthetic ...

Chemical modification describes the modification, addition or removal, through chemical reaction, of any of a variety of macromolecules, including proteins and nucleic acids. It refers to the use of ...

From traffic and congestion to limited parking options, delivering Amazon packages in big, dense cities like New York needs to be approached differently to address their unique complexities and ...