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The CRISPR Babies: When He Jiankui Edited the Human Germline

The CRISPR Babies: When He Jiankui Edited the Human Germline

In 2018, He Jiankui announced the world's first gene-edited babies. The scientific community was horrified—not because it was impossible, but because he did it anyway, before the ethics had been worked out.

Base Editing and Prime Editing: Beyond Cut and Paste

Base Editing and Prime Editing: Beyond Cut and Paste

CRISPR cuts. Base editing and prime editing don't—they chemically rewrite individual DNA letters without breaking the double helix. David Liu's tools represent a quieter, more precise revolution in gene editing.

CRISPR: The Gene Editing Revolution

CRISPR: The Gene Editing Revolution

CRISPR-Cas9 didn't come from a lab — it came from bacteria's billion-year immune war against viruses. Repurposed as a gene-editing tool, it can now cut and splice any genome with a precision that would have seemed impossible a decade ago.

The CRISPR Revolution

The CRISPR Revolution

CRISPR isn't a futuristic dream — it's already curing sickle cell disease. Understanding the bacterial immune logic behind the tool makes the revolution feel even more improbable and inevitable.

Off-Target Effects: When CRISPR Cuts in the Wrong Place

Off-Target Effects: When CRISPR Cuts in the Wrong Place

CRISPR is precise, but not perfect. Off-target cuts — edits landing in the wrong part of the genome — are the central safety challenge standing between CRISPR and widespread clinical use.

Sickle Cell Cured: The First CRISPR Miracle

Sickle Cell Cured: The First CRISPR Miracle

For most of human history, sickle cell disease was managed, not cured. In 2023, CRISPR changed that. The first approved gene-editing therapy edits a patient's own bone marrow stem cells, reactivating fetal hemoglobin genes silenced after birth. The cells work normally. The disease stops.

Gene Drives: Engineering Evolution Itself

Gene Drives: Engineering Evolution Itself

Gene drives are CRISPR with a propagation engine: instead of editing one organism, they spread a genetic change through an entire wild population. The implications for disease control—and for ecology—are staggering.