Alexandra Goho

All Stories by Alexandra Goho

  1. Chemistry

    Microbes craft unusual crystals

    Bacteria dwelling in an abandoned iron mine form unusual crystals that could help scientists look for signs of previous life on Mars.

  2. Tech

    Miniaturized 3-D Printing: New polymer ink writes tiny structures

    A new 3-D printer can build up complex polymer microstructures with features small enough for creating photonic crystals or scaffolds for tissue engineering.

  3. Archaeology

    Reconstructing ancient drinking habits

    A new technique involving the analysis of residue from pottery jars can discern the color of wine consumed by ancient Egyptians.

  4. Materials Science

    Forensics on Trial

    A decades-long practice of matching bullets on the basis of their chemical makeup is flawed, and the story behind this forensic technique reveals how science can get distorted in the courtroom.

  5. Chemistry

    Mini Motor: Synthetic molecule yields nanoscale rotor

    Scientists have built a tiny rotor out of a synthesized molecule that rotates in the presence of an electric field.

  6. Tech

    Special Treatment: Fuel cell draws energy from waste

    Researchers have created a fuel cell that breaks down organic matter in wastewater and, in the process, generates small amounts of electricity.

  7. Chemistry

    New champions among corrosive microbes

    Newly discovered strains of bacteria have developed a metabolic shortcut for eating away iron with great efficiency.

  8. Materials Science

    Cinching nanotubes into tough fibers

    Irradiating bundles of carbon nanotubes can lead to tougher fibers.

  9. Agriculture

    Fishy Alpha Males

    As a way to protect wild fish stocks, raising genetically engineered fish may be futile should some of these modified fish escape into the environment.

  10. Chemistry

    Clean hydrogen fuel from corn?

    A new reactor can convert ethanol from corn into hydrogen fuel with enough efficiency to make the process economical.

  11. Tech

    Body Builders

    By growing stem cells on three- dimensional polymer scaffolds, tissue engineers hope to mimic natural tissue development and ultimately produce replacement body parts.

  12. Chemistry

    Radical molecule could produce plastic magnets

    A team of chemists has synthesized an unusual organic molecule that could lead to cheaper and lighter magnets.