NEW YORK — The Scientific History Institute, which preserves and celebrates scientific and technological culture, has selected Diffusion as its public relations agency of record. Diffusion has been brought on to raise the Philadelphia-based Institute’s profile on the West Coast in preparation for its event on rare earth elements in Los Angeles taking place in September.

NEW YORK — KWT Global has been selected as public relations agency of record for, the online home improvement retailer, to help amplify the brand’s presence across the US. As Build’s communications partner, KWT is responsible for increasing awareness of the company’s customer service and breadth of product offerings. KWT Global will support Build through brand strategy, content marketing, influencer integrations, brand activations, thought leadership and media relations.

NEW YORK —Magrino has added four new clients to its roster — women’s clothing company Ala Von Auersperg; the Conrad DC hotel; The Four Seasons Restaurant in New York; and The Gallery at 200 Lex, also in New York. All join the agency’s roster of lifestyle clients in the areas of fashion, travel, food and design.

ST. PETERSBURG, FL —Paradise Advertising & Marketing has added the LaPlaya Beach and Golf Resort in Naples to its client portfolio. The agency will handle all public relations efforts on behalf of the resort. That will include working with print, online, and broadcast media outlets, as well as influencers, to ensure that consumers, travel agents, wholesalers, and corporate meeting planners are aware of the property’s key offerings.

SAN FRANCISCO — Karbo Communications has been named TIBCO Software’s agency of record. Karbo will handle TIBCO’s messaging, media, and public relations efforts in North America, advancing the company’s position as a global leader in integration, API management, and analytics.

LOS ANGELES — DRS and Associates has been named agency of record across multiple marketing service disciplines by Walker Zanger, a leader in natural stone, tile, and unique materials and surfaces.  DRS and Associates will provide innovative, integrated solutions to Walker Zanger including public relations, digital media, events, content marketing, influencer marketing and media planning.