Behind the scenes at Brookfield Zoo Chicago, a record-breaking conservation milestone is helping secure the future of one of the world’s most imperiled amphibians. Months of meticulous care and coordination enabled Brookfield Zoo Chicago to successfully breed and raise 12,244 Puerto Rican crested toad tadpoles to be released in the wild. Over the last decade, the Zoo has contributed nearly 40,000 Puerto Rican crested toad tadpoles to island-wide recovery efforts led by the Puerto Rican Crested Toad Conservancy (PRCTC).

The International Society for Stem Cell Research (ISSCR) today announced that the ISSCR 2027 Annual Meeting is coming back to San Francisco, USA, 15-18 June 2027. Recognized as the premier international forum for stem cell science, the gathering will recognize 25 years of discovery, collaboration, and progress in stem cell science and gather the people, ideas, and work that will shape the next quarter century.

A new study led by Dr Lin Su of Queen Mary University of London, published today in the Journal of the American Chemical Society, describes a new integrated solar reactor in which engineered Escherichia coli (E. coli) are grown directly inside the same liquid that converts CO₂ into a usable energy source using sunlight. In future, this technology may be used to make environmentally clean chemicals, plastics or even microbial protein.   

Understanding the packing and folding of DNA in sperm cells is a fundamental question in modern biology, related to infertility and to genetic and developmental defects. UC Davis researchers have now unveiled an important new piece of this puzzle. They have identified a protein, called DAXX, that guides how sperm DNA is organized, silences numerous genes and keeps some switched on. The work was published recently in Genes & Development. 

BUFFALO, NY — May 19, 2026 — A new research paper was published in Volume 18 of Aging-US on May 5, 2026, titled “Methylene blue protects hair follicle stem cells from oxidative and metabolic stress to enhance hair regeneration.”

Primary sclerosing cholangitis (PSC) is a rare disorder of the bile duct, involving the liver, bile duct, intestine, and immune tissues. This review paper examines new animal models that replicate the mechanical damage caused by PSC-like bile retention. New organoid models create 3D structures that resemble affected liver and bile duct tissue, as well as the molecular aspects of the disorder. Together, these models are guiding the development of new therapies against PSC.

Tumor cells exploit chemokine signaling to construct an immunosuppressive microenvironment that resists anti-tumor immune responses. A new review systematically maps the chemokine-receptor network in the tumor microenvironment and introduces a three-part “3D” targeting strategy: Decrease recruitment of suppressive cells (Tregs, MDSCs, TAMs), Develop effector T cell and NK cell function, and Dismantle physical and signaling barriers that exclude effectors from tumors. This framework ultimately provides a roadmap for precision combination immunotherapy to overcome immune evasion