Good morning. Here's what's going right. — Thursday, 26 March 2026

🌟 Today's Lead: FDA Approves AVLAYAH — First Hunter Syndrome Treatment to Cross Blood-Brain Barrier

For nearly 20 years, children with Hunter syndrome faced an impossible reality: treatments existed for their devastating genetic disease, but they couldn't reach the brain where much of the damage occurred. That changes today.

The FDA has approved AVLAYAH™ (tividenofusp-alfa-eknm), marking a watershed moment in rare disease treatment. This is the first FDA-approved drug specifically designed to cross the blood-brain barrier for Hunter syndrome (MPS II), finally addressing the neurological decline that has devastated families for two decades.

Hunter syndrome affects approximately 1 in 100,000 to 170,000 male births globally. The blood-brain barrier—our brain's natural protective shield—blocks 98% of small-molecule drugs. AVLAYAH hijacks the brain's own transport systems using Denali Therapeutics' Transport Vehicle platform, essentially smuggling the therapeutic molecule past this nearly impenetrable defence. For families watching their children's development stall and reverse, this represents the first new hope in twenty years.

This breakthrough validates an entire technology platform that could revolutionise treatment for multiple neurodegenerative diseases, from Alzheimer's to Parkinson's.

Read the full story → FDA approval announcement · Coverage: GlobeNewswire

In Brief

🐦 Record 1.1 Million People Join Global Bird Count, Document 75% of World Species

Over 1.1 million people across the globe participated in the 2026 Great Backyard Bird Count, smashing participation records while documenting an unprecedented 8,257 bird species—representing three-quarters of all known bird species worldwide. Participants submitted 467,696 checklists from every continent in just four days, creating a real-time snapshot of global bird populations and migration patterns that helps scientists track species abundance and identify conservation priorities.

The record participation reflects growing public engagement with environmental science. What makes this data particularly valuable is its global scope—unlike academic research limited by funding and geography, citizen science networks can monitor environmental changes across vast scales, providing early warning systems for ecosystem health.

Read the full story →

🌲 European Rewilding Success: Wolves, Bison, and Lynx Reclaim Historic Ranges

Across Europe, an extraordinary conservation success story is unfolding as wolves, European bison, and lynx reclaim territories where they disappeared decades or centuries ago. In Poland's Białowieża Forest, European bison numbers have grown from a handful of survivors to over 2,000 individuals roaming freely. Gray wolves have expanded their range from isolated pockets to establishing packs across Germany, France, and the Netherlands. Eurasian lynx are stalking through forests from the Carpathians to the Scottish Highlands.

These returning apex predators are triggering cascading ecological effects: wolves control deer populations allowing forests to regenerate; bison create mosaic landscapes supporting diverse plants and insects; lynx maintain balanced small mammal populations. Beyond biodiversity, rewilding delivers climate benefits—restored forests sequester carbon while providing natural flood defences for millions of Europeans.

This represents a fundamental shift from traditional conservation's focus on preserving small protected areas to actively restoring ecological processes across landscape scales.

Source: Rewilding Europe · World Rewilding Day 2026

📊 Progress by Numbers

• 1.1 million citizen scientists participated in this week's global bird count—a new record
• 20 years since the last new treatment for Hunter syndrome patients came to market; AVLAYAH changes that today
• 75% of all known bird species documented in a single four-day count event
• 7,000+ European bison now roaming wild forests, up from ~1,800 in 2003

💡 One Thing You Can Do

Participate in citizen science. The success of projects like the Great Backyard Bird Count shows that ordinary people generate extraordinary data. Whether you're a casual bird watcher, a nature photographer, or simply someone who enjoys being outside—platforms like eBird, iNaturalist, and community science projects need your observations. Your backyard counts toward global conservation decisions.

The Bright Side Daily | Unsubscribe | Share this digest | Follow us on social