Caitlín R. Kiernan (@auntbeast) is an American palaeontologist and author. She studied geology and palaeontology at @UABNews and @CUBoulder, and co-founded the Birmingham Paleontological Society in 1984 before becoming an award-winning author.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/7EZcc1XtEh

— RAS Women in STEM (@RAS_Women) February 28, 2019

Ruth Gates was a marine biologist. She pioneered research into the conservation of coral reefs, breeding corals that can withstand rising sea temperatures. She was Director of @himb_soest and the first woman President of the ISRS. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/561ACgjsqh

— RAS Women in STEM (@RAS_Women) February 27, 2019

Neena Schwartz was an American endocrinologist and author of A Lab of My Own. She completed her PhD @NorthwesternU in 1953 and was the only woman PhD student in the department. She co-founded, and became co-president of, @AWISNational in 1971.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/3ELY3CJykG

— RAS Women in STEM (@RAS_Women) February 26, 2019

Lisa Graumlich (@LisaGraumlich) is an American paleoclimatologist. She pioneered the use of dendrochronology - dating tree rings - to understand the impact of climate change on mountain ecosystems, and is currently a Dean at @UW.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/UY873dW3Bp

— RAS Women in STEM (@RAS_Women) February 25, 2019

Sally Le Page (@sallylepage) is a British evolutionary biologist and science communicator. She makes educational videos and has previously collaborated with @generalelectric and @RoosterTeeth. She’s currently a PhD student at @UniofOxford.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/pK1QT6aUjs

— RAS Women in STEM (@RAS_Women) February 24, 2019

Nergis Mavalvala is a Pakistani-American physicist. She gained her PhD from MIT in 1997, where she developed a laser interferometer for detecting gravitational waves. She was part of the team that discovered gravitational waves in 2016. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/xAterggYid

— RAS Women in STEM (@RAS_Women) February 23, 2019

Kate Craig-Wood (@Katie_Hax) is a British IT entrepreneur. She gained a master’s degree in biomedical science from @unisouthampton and is also the co-founder and managing director of Memset, Britain's first carbon neutral ISP.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/yuxspBx1YF

— RAS Women in STEM (@RAS_Women) February 22, 2019

Courtney Wilburn (@cjwilburn) is a web developer from Philadelphia. After working in higher education, she is now the Lead DevOps Engineer at @wirecutter. In 2015, she was selected as one of the White House’s LGBTQ Tech and Innovation Fellows. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/88WuPZwrE6

— RAS Women in STEM (@RAS_Women) February 21, 2019

Clara Barker (@ClaraMBarker) is a British engineer and material scientist. She manages the Centre for Applied Superconductivity at @UniofOxford and received the 2017 Points of Light award for her work within the LGBT+ community.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/xPhMQ29leD

— RAS Women in STEM (@RAS_Women) February 20, 2019

Angela Clayton was a British physicist who specialised in nuclear safely. She was also closely involved in the development of the Gender Recognition Act of 2004 and was knighted in 2006 for ‘serves to gender issues'.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/u15Wq3yPaN

— RAS Women in STEM (@RAS_Women) February 19, 2019

Christa Muth is a German systems scientist and activist for the trans community. She coined the term “Human Systems Engineering” and is the subject of the documentary Between Two-Spirit: Becoming a Woman at Sixty.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/jBZO8lazEg

— RAS Women in STEM (@RAS_Women) February 18, 2019

Jessica Mink (@MinkJessica) is an American software developer and astronomer. She was part of the team that discovered the rings around Uranus and currently works at @saoastro, where she develops software for data analysis and reduction. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/xsGRcxmvHk

— RAS Women in STEM (@RAS_Women) February 17, 2019

Audrey Tang (@audreyt) is a Taiwanese software programmer. She led the Pugs project, to implement Perl 6 and has contributed to several Free Software programs. She is also the first transgender official in the top executive Taiwanese cabinet.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/PQ56j8ZhHW

— RAS Women in STEM (@RAS_Women) February 16, 2019

JJ Eldridge (@astro_jje) is an astrophysicist who specialises in binary stars. They completed their PhD @Cambridge_Uni and are a lecturer @AucklandUni as well as a member of the Inclusive, Diverse, Equitable Astronomy committee of @AstroSocAus #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/rmpXwdfI5m

— RAS Women in STEM (@RAS_Women) February 15, 2019

Kate Hutton is an American astronomer and seismologist. She gained a PhD in astronomy at @UofMaryland in 1976 and went on to work for @Caltech, where she monitored Southern California's earthquake activity for 37 years before retiring in 2015.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/FpDuuf9KlS

— RAS Women in STEM (@RAS_Women) February 14, 2019

Rachael Padman is an Australian physicist and astronomer. She was Deputy Project Scientist for the James Clerk Maxwell Telescope in Hawaii and is currently Director of Education in School of Physical Sciences at @Cambridge_Uni.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/FhjapS5hsU

— RAS Women in STEM (@RAS_Women) February 13, 2019

Sophie Wilson is a British computer scientist. She designed the Acorn Micro-Computer, including its programming language BBC BASIC and the instruction set of the ARM processor, which is used in most smartphones. She is now a Director @Broadcom.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/uHITHjKJ8H

— RAS Women in STEM (@RAS_Women) February 12, 2019

Mary Ann Horton is an American computer scientist and is considered one of the pioneers of Usenet and Internet. Horton is also an advocate for trans rights and was awarded the ‘Trailblazer' award by Out & Equal Workplace Advocates in 2001.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/MZQ2v5B6A7

— RAS Women in STEM (@RAS_Women) February 11, 2019

Linda Cremonesi (@LindaCremonesi) is a particle physicist @ucl specialising in neutrinos. She completed her PhD @QMUL in 2015 and was recently awarded the @IOP_HEPP Science and Society prize for outstanding contributions to outreach.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/bzR9RY4Dks

— RAS Women in STEM (@RAS_Women) February 10, 2019

Sara Josephine Baker was an American medical doctor. In 1917, she noted that new-born Americans had a higher mortality rate than solders in WWI and fought to reduce this. She also twice tracked down Mary Mallon, aka Typhoid Mary.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/iIi6DWqXLF

— RAS Women in STEM (@RAS_Women) February 9, 2019

Louise Pearce was an American pathologist who helped develop treatment for African sleeping sickness. She lived with Sara Baker and Ida A. R. Wylie. All three were members of Heterodoxy, a feminist club founded in 1912 with many #LGBT+ members.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/VkkTcfhenM

— RAS Women in STEM (@RAS_Women) February 8, 2019

Harriet Brown (@Hattieinspace) is an astrophysicist at @LJMU who just completed her thesis on the disruption of binary star systems by massive black holes, which includes looking at the 3-body problem in physics. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/BwosS4OJjJ

— RAS Women in STEM (@RAS_Women) February 7, 2019

Margaret Todd was a Scottish writer and medical doctor. She became one of the first students at the Edinburgh School of Medicine for Women in 1886, and coined the term isotope in 1913. Her partner was fellow medical doctor Sophia Jex-Blake.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/JDDpt2hVlk

— RAS Women in STEM (@RAS_Women) February 6, 2019

Sophia Jex-Blake was an English medical doctor. She led the campaign to allow women university education and became one of 7 women to study medicine for the first time @EdinburghUni in 1869. Her partner was fellow medical doctor Margaret Todd.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/MCjQI9UoCQ

— RAS Women in STEM (@RAS_Women) February 5, 2019

Naomi Rowe-Gurney (@NRoweGurney) is an astronomer studying for her PhD at @uniofleicester. She is part of the Planetary Atmospheres team and specialises in the atmospheres of ice giants like Uranus and Neptune. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/BZLN9NPjap

— RAS Women in STEM (@RAS_Women) February 4, 2019

Margaret Mead was an American anthropologist who specialised in gender and sexuality. She gained her PhD @Columbia in 1929, and served as President of @aaas in 1975. Mead shared a romantic relationship with fellow anthropologist Ruth Benedict.#STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/VPOGY0yNL9

— RAS Women in STEM (@RAS_Women) February 3, 2019

Lynn Conway (@lynnconway) is an American computer scientist and electrical engineer. She helped design supercomputers @IBM but was fired in 1968 when she came out as trans. Conway then joined @PARCinc and became a professor @MIT and @UMich. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/3ZbjAJF34O

— RAS Women in STEM (@RAS_Women) February 2, 2019

Sally Ride was an American physicist and astronaut. She became the third woman, and first American woman, in space in 1983. Ride is still the youngest astronaut, having launched aged 32, and was the first publicly known LGBT+ astronaut. #STEMlegends #WomenInSTEM #LGBTHM19 pic.twitter.com/j5m7DHX1zB

— RAS Women in STEM (@RAS_Women) February 1, 2019