B chromosomes in plants

Bacillariophyceae

Bacillary dysentery

Background count

Background extinction

Bacteria

Bacterial genetics

Bacterial growth

Bacterial luminescence

Bacterial physiology and metabolism

Bacterial symbionts of farming ants

Bacterial taxonomy

Bacteriology

Bacteriophage

Badger

Balance

Ball-and-race-type pulverizer

Ballast resistor

Ballistic missile

Ballistics

Balloon

Balloon circumnavigation

Balsa

Baltic Sea

Bamboo

Banana

Band spectrum

Band theory of solids

Banded iron formation

Bandwidth requirements (communications)

Barbiturate

Barcoding life

Barge technology

Bariatric surgery for obesity

Barite

Barium

Bark

Barkhausen effect

Barley

Barnacle reproduction

Baroclinic field

Barometer

Barotropic field

Barracuda

Barrier island

Bartonellosis

Barycentric calculus

Baryon

Basalt

Base (chemistry)

Basil

Basin

Basommatophora

Basses

Basswood

Bat guano: record of climate change

Batales

Bathynellacea

Batoidea

Batrachoidiformes

Bats and wind energy

Battery

Bauxite

Bayesian statistics

Baylisascariasis

Bdelloid rotifers

Bdelloidea

Beam

Beam-column

Beam-foil spectroscopy

Bean

Bear

Beat

Beaver

Bedbug infestations

Beech

Beef cattle production

Beekeeping

Beer

Beet

Behavior genetics

Behavioral ecology

Behavioral toxicology

Belemnitida

Bell

Belladonna

Beloniformes

Belt drive

Bentonite

Benzene

Benzoic acid

Benzoyl peroxide

Bering Sea

Berkelium

Bermuda grass

Bernoulli's theorem

Beroida

Beryciformes

Beryl

Beryllium