If the top of whatever Nobel prizes are handed out for remains white men, nobody that doesn't fit that category will feel like they have a chance.
Anyway, it's one strategy; the other, and IMO more important one, is to give everybody equal access to education and the sciences. This is a governmental issue, who should be paying for everyone's education, transport to said education, and if need be, housing near said education. And of course strict anti-discrimination and anti-elitism laws. Breaking up concepts of 'class' should also be a thing, since right now, working class people will be less inclined to go to university for example.
I've been lucky in that regard; grew up 'working class', but thanks to the at the time government policies of giving out stipends for education I got college educated and a career in software development, moving up to middle class. It's a great example of social mobility, and I think everyone should have that opportunity.
But after my education, the government pulled up the ladder behind me. First by changing the scholarship rules so that after a certain age you are no longer entitled, making it harder for people to go from college to university for example. Then they changed it so it's 100% a loan, which on the one hand makes people less inclined to start a higher level education, and on the other it starts their career with tens of thousands of debt, making it harder to e.g. buy a house and start a family alongside their career.
I mean there's voices going up to undo those changes now, but it's been years under this shitty system and damage has already been done.
It's stupid as well, because it's a relatively small cost at great benefit - it doesn't make financial sense. Say an education costs the government 50.000 per person. That is repaid in income taxes alone within 3-5 years.
edit: well this comment meandered a bit.