Matthias Jakob Schleiden
German botanist, cell theory co-founder

Born
April 5th, 1804
221 years ago
Died
June 23rd, 1881
143 years ago — 77 years old
Category
Scientists & Innovators
Country
Germany
Links & References
A significant figure in plant biology, contributions included the formulation of the cell theory alongside Theodor Schwann. Conducted extensive research on plant tissues and proposed that all plant structures originate from cells. Published influential works and engaged in discussions that shaped botanical science in the 19th century.
Co-developed cell theory with Theodor Schwann
Advanced the study of plant cells and tissues
Other People Born on April 5th
Larry McCray
Emergence in the music scene occurred in the late 1980s with a distinctive blend of blues and rock. Released the debut album, 'Ambition', in 1990, which showcased powerful guitar work and soulful vocals. Gained attention for performances and tours across the United States, influencing the blues rock genre. Collaboration with several renowned artists contributed to further prominence within the music community. Continued to release albums and perform live, maintaining a dedicated fan base and reputation as a skilled guitarist and songwriter.
Continue ReadingFrancesco Laparelli
An Italian architect and military engineer, contributed significantly to the design of fortifications during the Renaissance. Worked for the Papal States, designing several notable structures. Also served under the Spanish crown in Sicily, where he created strategic defenses. His work included the design of the city of Valletta in Malta, which served as a stronghold against Ottoman forces. Employed principles of fortification that influenced military architecture in Europe.
Continue ReadingAlex Cuthbert
Played as a winger for the Wales national rugby union team and the Cardiff Blues. Cuthbert earned recognition for his contributions to Welsh rugby during the early 2010s. Achieved significant success by participating in the 2015 Rugby World Cup and securing victory in the 2013 Six Nations Championship. Throughout a competitive career, Cuthbert showcased strong athleticism and scoring ability, contributing to both club and national team successes.
Continue ReadingAntonio Ferri
Born in Italy in 1912, significant contributions to the field of nuclear physics were made. Conducted research on particle interactions and contributed to the development of the Italian nuclear program. Published multiple studies that advanced the understanding of nuclear reactions and promoted scientific collaboration across Europe. Served as a professor at various academic institutions, influencing the next generation of physicists through education and mentorship.
Continue ReadingCarlos Guastavino
Born in 1912, this Argentine composer contributed significantly to the classical music repertoire, particularly in the area of choral and piano music. His music often showcased the influences of Argentine folk traditions, and he frequently incorporated national themes. Guastavino studied music in Buenos Aires and was associated with notable figures in the Argentine musical landscape. His works gained recognition in various international music festivals. Throughout his lifetime, he composed a vast number of pieces, including songs that have become staples in the folk and classical canon. He passed away in 2000.
Continue ReadingMarie Jules César Savigny
Born in France, contributed significantly to the study of zoology and comparative anatomy. Conducted extensive research on marine life, particularly in the Mediterranean Sea. Participated in the scientific expedition to Egypt where numerous specimens were collected and described. Published numerous works detailing the morphology of several species, aiding in the development of modern taxonomy.
Continue ReadingOther People Who Died on June 23rd
Nirmala Joshi
An Indian nun and lawyer, dedicated life to social work, focusing on women's rights and education. Founded several organizations aimed at empowering women and uplifting marginalized communities. Worked extensively in legal aid and advocacy for underprivileged groups. Contributed significantly to community development initiatives and educational programs for girls.
Continue ReadingJerri Nielsen
A physician who served as the only medical doctor at the Amundsen-Scott South Pole Station during the 1999 winter season. In 1999, faced with a breast cancer diagnosis while in Antarctica, took steps to conduct her own treatment despite the harsh conditions. Successfully evacuated from the station to receive further medical care, bringing attention to the unique challenges of providing healthcare in extreme environments. Authored a memoir detailing the experience titled 'Ice Bound: A Doctor's Incredible Battle for Survival at the South Pole'.
Continue ReadingGiuseppina Tuissi
Born in 1923, contributed to the Italian resistance during World War II. Actively joined partisans, supporting anti-fascist efforts in Italy. Worked within the communist movement, advocating for workers' rights and social justice after the war. Played a significant role in organizing activities for the women's movement in Italy, fighting for equal rights. Involved in politics and local governance for several decades, influencing socialist policies and community development.
Continue ReadingPedro de Mendoza
Contributed significantly to the Spanish colonization of the Americas as a conquistador. Led the first successful expedition to establish a permanent European settlement in present-day Argentina, founding Buenos Aires in 1536. Faced challenges from indigenous peoples and supply shortages, which ultimately led to the abandonment of the settlement. Part of the expedition to Peru and served as a military leader in various capacities. His leadership and actions had lasting implications for Spanish expansion in South America.
Continue ReadingFrank Kelso
An admiral and politician in the United States Navy, served as the Secretary of the Navy from 1990 to 1993 during the administration of President George H.W. Bush. Oversaw significant naval operations during the Gulf War and was involved in the transition of the Navy during the end of the Cold War. Prior to this role, served in various leadership positions, including Commander in Chief of the U.S. Pacific Fleet, where managed operations in the Pacific region.
Continue ReadingBrigitte Engerer
Engaged in an extensive career as a pianist and educator. Gained recognition for performances of works by composers such as Chopin, Liszt, and Rachmaninoff. Participated in numerous prestigious competitions, including a top prize at the Clara Haskil International Piano Competition in 1972. Engaged in teaching at several institutions, sharing expertise in classical piano.
Continue Reading