19An increasing amount of research has focused on studying the drivers shaping demographics 20 in science. As a result, we now have a better idea of the current state of gender disparity in 21 science, which remains widespread worldwide. However, fewer studies and limited data have 22 restricted our understanding of this phenomenon in the Neotropics, a highly important region 23 in terms of cultural and biological diversity. Despite a civil war that lasted more than five 24 decades and produced eight million victims (half of them women), Colombia is the fifth 25 country with the highest scientific production in Latin America and the Caribbean, as well as 26 the second most biodiverse country in the world. In order to evaluate the status of gender 27 parity in science in Colombia throughout the 21st century, data of science demographics was 28 gathered covering the 2000-2017 time period. Percentage of women in science was 29 decomposed by research area, researcher rank level and education level. Gender disparity was 30 also estimated for changes in average age, access to scholarships for postgraduate studies, 31 and number of doctoral graduates. Finally, using logistic function modelling, temporal 32 projections into the future were performed, in order to estimate how long could it take to 33 reach gender parity. Of six research fields, medical and health science is the only one to have 34 reached gender parity (55.99%), although it is also the only one showing a steady decrease in 35 women representation across time. On the other hand, engineering, humanities and natural 36 sciences had the lowest percentages of female representation (19.89%, 30.02%, and 30.21%, 37 respectively). Female researchers were on average younger than male researchers, and they 38 also showed a decreasing presence as they move upward to more senior levels, exemplifying 39 the 'leaky-pipeline phenomenon' common in science. More men were observed both as 40 scholarship awardees for doctoral studies, and as doctoral graduates, indicating that obtaining 41 a doctoral degree could be a major limiting factor for women in science. Possible drivers of 42 these results are analysed, suggesting that a combination of lack of research funding, 43 3 insufficient legal framework, pre-existing biases, and poor protection of women's rights 44 inhibits female participation in science. Based on logistic function modelling it is estimated 45 that, without any action to change current trends, it could take between 10 (humanities) and 46 175 (engineering) years to reach gender parity across all research areas. 47