- Has been and will continue to rise as we are coming out of an ice age but big polluters are exacerbating the problem. Fisheries being destroyed are my No. 1 concern in this regard as I’ve heard (no source sorry this is just what I’ve heard) that many people of them will be critically depleted in under fifty years. - It is regrettable that all nukes have not been dismantled but I think the odds of any nuclear power using them is quite small. I am concerned rogue elements (radical elements in Iran, a terrorist organization, etc) would absolutely use one of they could obtain a warhead. - Is by no means an unfounded claim as this country is still battling vestiges of its racist and sexist heritage. However often people who claim it is a massive problem use a lot of misleading data (E.G gender pay gap data is often built accounting for mothers who stay at home to raise children.) - Sexism is regrettably still a problem for many but I think it will be a thing of the past quite soon. Racism will be a much more frustrating battle due to a myriad of factors. - I presume this alludes to how our elderly are mistreated on a constant basis but I admit I have never heard the term before. - I hope not because I want humanity to expand across the galaxy. - Uh, doubtful. Edit: I fixed an error in my Einstein answer. [spoiler]Sorry, all out of salt.[/spoiler]