Climate change, rising food prices and a growing world population mean that GM crops are in the spotlight like never before, but few technologies are more controversial.
Coral bleaching and ocean acidification threaten to cause serious disruption to marine food webs.
Agriculture is a major contributor to climate change but is also highly vulnerable to its impacts.
Unsafe food causes health problems for millions of people each year, and in some cases can be fatal.
Each year pesticides cause tens of millions of cases of accidental poisoning and are also linked to more serious threats including cancer, birth defects and death.
There are growing concerns that these widespread chemicals can disrupt the human hormone system and lead to various health impacts.