TechKnow 143: Bionic eyes & orange blight is back

Need to Know: How a bionic eye works

An innovative new surgery implants a small device directly on the retina.

Topics:

Science

Technology

Behind the bionic eye

This week's story was just another eye-opening experience for our contributor, who is also an engineer.

Topics:

Technology

Science

When '€˜Patient Zero'€™ is your backyard tree

Our producer on whether an Indian wasp can save California's citrus crop—by being introduced to residences, not farms.

Topics:

Science

Agriculture

Need to Know: Meet the bug killing the world's orange groves

How one bug has spread a disease known as “citrus greening” from Asia to the U.S.

Topics:

Science

Technology

Food

Agriculture

• Producer’s Blog: How RNA interference could help save trees—and people
• Could spinach genes save the world's oranges?

Modifying older robot technology to study the ocean’s sharks in new ways

Marita Davison swims with sharks as she explores the robotic technology changing the way scientists study them.

Topics:

Technology

Water

Science

• 'TechKnow' Q&A: Biologist Marita Davison on tracking leopard sharks