The given table provides information about the public investment and the percentage of PhD holders in five distinct fields in the year 2015 and 2025.
Overall, it is apparent from the table that all scientific domains had witnessed an increase in 2025, medical research had obtained the highest share of funding in both 2015 and 2025, whereas space exploration field had the largest proportion of PhD qualified scientists.
As for the public funding, in 2015 medical research obtained the greatest amount of funding, a total of 150.5 billion USD which in 2025 increased by about 55 billion USD, reaching 210 billion USD. In contrast, in 2015 artificial intelligence gained the smallest funding at 40.2 billion USD, which almost tripled in 2025 reaching a total of 150.8 billion USD.
Regarding the PhD qualified researchers, the sector which had a majority of PhD holders was space exploration with 85% of all researchers, while environmental science had the lowest number of PhDs, accounting for only 65% of scientists.
