Working in a zoo reveals the unseen science behind animal welfare. From reading behaviour and understanding visitor responses to designing enrichment and naturalistic enclosures, good zoo management is about preserving choice and wellbeing. For biologist Shweta Mukundan, observing animals has transformed how she understands captivity, conservation, and care.

Does our internal clock dictate our ability to fight infection? While we sleep, our body undergoes a massive physiological shift governed by the circadian rhythm. Recent research in chrono-immunology suggests that our immune system is not a constant shield but a rhythmic force that fluctuates between day and night. Understanding these peaks and troughs, driven by molecular clocks and hormonal shifts, offers a roadmap for timing vaccines and treatments more effectively.

Long before mathematics became a technical discipline, numbers were contemplated as a key to understanding the universe. From fractals to living patterns, constants like π reveal how nature unfolds through lawful constraint. More than measurement, π links straightness and curvature—quietly shaping form, rhythm, and biological order across scales.

Inside living cells, molecules move through extreme crowding, far from the ideal conditions of lab buffers. This dense, constrained environment reshapes protein folding, interactions, and drug behaviour. By mimicking this “molecular traffic jam”, researchers are redefining biochemical rules and developing more realistic models to improve drug discovery, delivery, and therapeutic precision.

They don’t pass on their genes, yet they pass on profound evolutionary insights. Sterile hybrids—from mules to lab-bred bees—are changing how we think about life, legacy, and the limits of nature.