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Report highlights the dire need to control its feral cat population and protect native wildlife.

Could gene edited foods could have important health and environmental benefits for post-Brexit Britain? And can we stomach them?

More often. what we have here is absolute certification of death, complete volunteerism on the part of the people involved in the experiment with permission, and enthusiasm that they want to help. >> reporter: without genetic modification, a transplanted pig kidney would likely have been rejected within minutes. this kidney worked perfectly for 54 hours before being disconnected. what could it mean? >> it could mean that no one will need to die waiting for an organ anymore. >> reporter: dr. jon lapook, cbs news, new york. >> o'donnell: it's pretty revolutionary. well, there is still much more ...

Kew itself doesn't get involved in genetic modification. it is the role of kew, i think, to explain these issues to our visitors. we should be explaining why plants matter. we should be explaining contemporary issues in plant science and the relationships between plants and humanity. agriculture food is a very good example. 0ur big festival next summer is all on this subject, and we will touch upon genetic modification because it is one tool that can be used, potentially, to increase food yields, in particularfor the most vulnerable countries and communities in the world. and i think we'd be m...

We explain the consequences. for example, it's striking that 50% of all human calories come from just three plant species — rice, maize and wheat. many of those crops are going to be seriously challenged by new peak temperatures or prolonged periods of acidity. so for food security — feeding a growing population — reasons alone, we all need to be very concerned about the impacts of climate change. but do you also, then, wade into very complex debates about engineering of new genetic types of plant? do you tell the world that, "you know what? "given that we're at a world population of 8 b...