Radioactive Symbol — Gray, Neutral

1600 × 1200

Scientist Hugging Reactor — Vector Art

1280 × 1024

Biohazard Symbol — Yellow, Warning, Vector Art

1600 × 1200

Scientist Hugging Reactor — Gray, Playful, Vector Art, Heart, Atom Symbol

1280 × 800

Scientist Hugging Reactor — Gray, Playful, Vector Art

1280 × 720

Scientist Hugging Reactor — Gray, Playful, Vector Art, Heart, Atom Symbol, Lab Coat, White

1920 × 1200

Biohazard Symbol — Black, Ominous, Vector Art, White

1280 × 1024

Scientist with Nuclear Reactor

1920 × 1200

Yellow and Black Stripes — Warning, Vector Art

1920 × 1080

Green Biohazard Symbol — Neutral, Vector Art, Gray

1280 × 1024

Biohazard Symbol — Black, Neutral, Vector Art

3456 × 3240

Erwin Schrödinger Portrait — Red, Warning, Vector Art

1440 × 900