Stunning snails to ice mummy tattoos: Ten of the best science pictures of the week – BBC

Under the lens of powerful microscopes, these snails reveal a world unseen to the naked eye, bursting with vibrant colors and intricate textures that showcase nature’s artistic mastery on a miniature scale. Their shells, often dismissed as simple spirals, come to life with iridescent hues and delicate patterns that tell stories of growth, adaptation, and survival. Scientists and photographers alike have marveled at how these tiny creatures embody a perfect blend of beauty and biology, making them a compelling subject for both art and research.

The close-up images illuminate details such as:

• Microscopic ridges and grooves that strengthen the shell.
• Vibrant pigments reflecting sunlight in mesmerizing ways.
• Organic textures that hint at the snail’s environment and diet.

Excavated from a glacier, the remarkably preserved ice mummy has opened a new window into ancient human life, offering clues that have long been entombed beneath layers of ice. Scientists utilized state-of-the-art imaging techniques to analyze tattoos inked on the skin, revealing symbolic patterns thought to represent ancient healing practices. The discovery not only provides insight into the individual’s social and cultural identity but also sheds light on climatic conditions and lifestyle adaptations from thousands of years ago.

Among the fascinating findings, researchers identified organic pigments within the tattooed markings, suggesting early advancements in dye creation. Additionally, a high-resolution scan cataloged the mummy’s belongings, which include:

• Stone tools finely crafted for hunting
• Plant fibers used in clothing
• Remnants of medicinal herbs

Behind each breathtaking image lies a tapestry of advanced technologies pushing the boundaries of scientific visualization. From high-resolution microscopy capturing the delicate patterns etched into a snail’s shell to computed tomography (CT) scanning revealing intricate tattoos beneath an ice-preserved mummy’s skin, these techniques offer unparalleled insights. Innovations such as multispectral imaging enable scientists to analyze materials and biological samples beyond visible light, exposing hidden layers and forging new paths in archaeological and biological research.

Key methods fueling this visual revolution include:

• Confocal laser scanning microscopy: Provides high-contrast, 3D images by focusing laser beams onto specimens with pinpoint accuracy.
• Digital infrared photography: Captures thermal variations to highlight hidden structures and patterns.
• Phase-contrast X-ray imaging: Enhances contrast in soft tissues and delicate materials without invasive preparation.